Summarize the key points of the first volume of English in the sixth grade of primary school

I can only solve the math problem for you. English and Chinese are not very good at sorting out the necessary formulas for the knowledge points in the primary school math exam. 1. What is the perimeter of the figure? The sum of all the sides of a figure is the circumference of the figure. 2. What is the area? The size of the surface of an object or the plane figure enclosed by it is called their area. 3. Relationship between the parts of addition: one addend = and-another addend 4. Relationship between the parts of subtraction: Subtraction = minuend-difference minuend = subtraction+difference 5. Relationship between the parts of multiplication: one factor = product ÷ another factor 6. Relationship between the parts of division: Divider = dividend ÷ quotient dividend = The figure composed of two rays drawn from a point is called an angle. (2) What is the vertex of an angle? The endpoint of an angle is called a vertex. (3) What is the edge of a corner? The ray that forms an angle is called the edge of the angle. (4) What is a right angle? An angle of 9 degrees is a right angle. (5) What is a straight angle? The two sides of an angle are in a straight line, and such an angle is called a straight angle. (6) What is an acute angle? An angle less than 9 is an acute angle. (7) What is an obtuse angle? An angle greater than 9 and less than 18 is an obtuse angle. (8) What is round angle? A ray rotates around its endpoint at an angle of Zhou Suocheng called round angle, and a round angle is equal to 36.8. (1) What is perpendicular to each other? What is a vertical line? What is a drooping foot? When two straight lines intersect at right angles, they are perpendicular to each other, one of which is called the perpendicular of the other, and the intersection of these two straight lines is called the vertical foot. (2) What is the distance from a point to a straight line? Draw a vertical line from a point outside the line, and the distance between the point and the vertical foot is called the distance from this point to the line. 9. Triangle (1) What is a triangle? A figure surrounded by three line segments is called a triangle. (2) What are the sides of a triangle? Each line segment that forms a triangle is called the edge of the triangle. (3) What is the vertex of a triangle? The intersection of every two line segments is called the vertex of a triangle. (4) What is an acute triangle? A triangle with three acute angles is called an acute triangle. (5) What is a right triangle? A triangle with a right angle is called a right triangle. (6) What is an obtuse triangle? A triangle with an obtuse angle is called an obtuse triangle. (7) What is an isosceles triangle? A triangle with two equal sides is called an isosceles triangle. (8) What is the waist of an isosceles triangle? In an isosceles triangle, two equal sides are called the waist of the isosceles triangle. (9) What is the vertex of an isosceles triangle? The intersection of two waists is called the vertex of an isosceles triangle. (1) What is the base of an isosceles triangle? In an isosceles triangle, the side that is not equal to the other two sides is called the base of the isosceles triangle. (11) What is the base angle of an isosceles triangle? The two equal angles on the base are called the base angles of an isosceles triangle. (12) What is an equilateral triangle? A triangle with three equal sides is called an equilateral triangle, also called a regular triangle. (13) What is the height of a triangle? What is the base of a triangle? Draw a vertical line from a vertex of a triangle to its opposite side. The line segment between the vertex and the vertical foot is called the height of the triangle, and the opposite side of the vertex is called the bottom of the triangle. (14) What is the sum of the internal angles of a triangle? The sum of the internal angles of a triangle is 18.1. Quadrilateral (1) What is a quadrilateral? A figure surrounded by four line segments is called a quadrilateral. (2) What is an equilateral? Two sets of parallelograms with parallel opposite sides are called parallelograms. (3) What is the height of a parallelogram? Draw a vertical line from a point on one side of a parallelogram to the opposite side. The line segment between this point and the vertical foot is called the height of the quadrilateral. (4) What is a trapezoid? A quadrilateral with only one set of parallel sides is called a trapezoid. (5) What is the bottom of a trapezoid? A set of mutually equal sides in a trapezoid is called the bottom of the trapezoid (usually the shorter bottom is called the upper bottom and the longer bottom is called the lower bottom). (6) What is a trapezoidal waist? In a trapezoid, an unequal set of opposite sides is called the waist of the trapezoid. (7) What is the height of a trapezoid? Draw a vertical line from a point on the upper bottom to the lower bottom. The line segment between this point and the vertical foot is called the height of the trapezoid. (8) What is an isosceles trapezoid? A trapezoid with equal waist is called an isosceles trapezoid. 11. What is a natural number? , 1, 2, 3, 4, 5, 6, 7, 8, 9, 1 ... used to represent the number of objects are natural numbers (natural numbers are all integers). 12. What is the rounding method? When finding the approximate number of a number, look at the number on the highest digit of the omitted mantissa. If it is 4 or less, discard the mantissa. If it is 5 or greater than 5, add 1 to its previous digit after removing the mantissa. This method of finding approximate numbers is called rounding. 13. The meaning of addition and the law of operation (1) What is addition? The operation of combining two numbers into one number is called addition. (2) What is addend? Two numbers added together are called addends. (3) What is harmony? The result of adding addends is called sum. (4) What is additive commutative law? When two numbers are added and the positions of addends are exchanged, their sum remains unchanged. This is called additive commutative law. 14. What is subtraction? Given the sum of two numbers and one of the addends, the operation of finding the other addend is called subtraction. 15. What is the minuend? What is subtraction? What is difference? In subtraction, the known sum is called the minuend, the known number subtracted is called the subtraction, and the unknown number obtained is called the difference. 16. The relationship between the parts of addition: sum = addend+addend = sum-another addend 17. The relationship between the parts of subtraction: difference = minuend-meimei = minuend-difference = meimei+difference 18. Multiplication (1) What is multiplication? A simple operation to find the sum of several identical addends is called multiplication. (2) What is a factor? Multiplied two numbers are called factors. (3) What is product? The number obtained by multiplying factors is called product. (4) What is the multiplicative commutative law? When two factors are multiplied, the position of the factors is exchanged, and their products are unchanged. This is called the multiplicative commutative law. (5) What is the law of multiplicative association? When three numbers are multiplied, the first two numbers are multiplied first and then the third number, or the last two numbers are multiplied first and then the first number, and their products are unchanged. This is called the law of multiplicative association. 19. Division (1) What is division? Given the product of two factors and one of them, the operation of finding the other factor is called division. (2) What is dividend? In division, the known product is called dividend. (3) What is a divisor? In division, a known factor is called divisor. (4) What is business? In division, the unknown factor is called quotient. 2. Relationship between parts of multiplication: product = factor × factor = product ÷ another factor 21. (1) Relationship between parts of division: quotient = dividend ÷ divisor = dividend ÷ quotient (2) Relationship between parts of division with remainder: dividend = quotient × divisor+. Usually, the sum of the measured number and the unit name is called the nominal number. 23. What is a single number? A number with only one unit name is called a single number. 24. What is a compound number? Numbers with two or more unit names are called compound numbers. 25. What is a decimal? Imitating the writing method of integers, write them on the right side of integer digits, separated by dots, and the numbers used to represent tenths, hundredths and thousandths are called decimals. 26. What are the basic properties of decimals? Adding or removing zeros at the end of decimals keeps the size of decimals unchanged, which is called the basic nature of decimals. 27. What is a finite decimal? The number of digits in the decimal part is limited. A decimal is called a finite decimal. 28. What is an infinite decimal? A decimal with infinite digits is called an infinite decimal. 29. What is a circular festival? A number in which the parts of a cyclic decimal repeatedly appear in turn is called the cyclic section of this number. 3. What is a pure cyclic decimal? The cyclic section starting from the first decimal place is called pure cyclic decimal. 31. What is mixed recurring decimal? A cyclic section that doesn't start with the first decimal part is called a mixed recurring decimal. 32. What are the four operations? We call the four operations of addition, subtraction, multiplication and division as four operations. 33. What is an equation? Equations with unknowns are called equations. 34. What is solving an equation? The process of solving an equation is called solving an equation. 35. What is a multiple? What is a divisor? If A is divisible by B, A is a multiple of B, and B is called a divisor of A (or a factor of A). 36. What kind of number is divisible by 2? Numbers with , 2, 4, 6, and 8 in the unit can be divisible by 2. 37. What is an even number? A number divisible by 2 is called an even number. 38. What is an odd number? Numbers that are not divisible by 2 are called odd numbers. 39. What kind of number can be divisible by 5? A number that is or 5 in a unit can be divisible by 5. 4. What kind of number is divisible by 3? The sum of the digits of a number can be divisible by 3, and this number can be divisible by 3. 41. What is a prime number (or prime number)? A number is called a prime number if it has only two divisors: 1 and itself. 42. What is a composite number? A number has other divisors besides 1 and itself. Such numbers are called composite numbers. 43. What is a prime factor? Each composite number can be written as the multiplication of several prime numbers. Each prime number is a factor of this composite number, which is called the prime factor of this composite number. 44. What is a factorization prime factor? Representing a composite number by multiplying it by a prime factor is called factorization of prime factors. 45. What is a common divisor? What is the greatest common divisor? The common divisor of several numbers is called common divisor. The largest one is called the greatest common divisor. 46. What is a prime number? Two numbers whose common divisor is only 1 are called prime numbers. 47. What is a common multiple? What is the least common multiple? The common multiple of several numbers is called the common multiple of these numbers. The smallest one is called the least common multiple of these numbers. 48. Score (1) What is a score? Divide unit 1 into several parts on average, and the number representing such a part or parts is called a score. (2) What is a fractional line? The horizontal line in the middle of the score is called the fractional line. (3) What is the denominator? The part below the fractional line is called the denominator. (4) What is a molecule? The part above the fractional line is called the numerator. (5) What is a fractional unit? Divide the unit "1" into several parts on average, indicating that one of them is called a fractional unit. 49. How to compare the scores? (1) For two fractions with the same denominator, the fraction with larger numerator is larger. (2) For two fractions with the same numerator, the numerator with the smaller denominator is larger. (3) What is a true score? A fraction whose numerator is smaller than the denominator is called a true fraction. (4) What is a false score? Fractions with numerator greater than denominator or numerator equal to denominator are called false fractions. (5) What is a score? A number composed of an integral fraction and a true fraction is usually called a fractional number. (6) What is the basic nature of the score? The numerator and denominator of a fraction are multiplied or divided by the same number (except ) at the same time, and the size of the fraction remains the same, which is the basic property of the fraction. (7) What is approximate score? Turning a fraction into a number equal to it, but with smaller numerator and denominator, is called a divisor. (8) What is simplest fraction? A fraction whose numerator and denominator are prime numbers is called simplest fraction. 5. Ratio (1) What is ratio? The division of two numbers is also called the ratio of two numbers. (2) What is the preceding paragraph? The number before the comparison sign is called the previous item of the comparison. (3) What is the latter term of comparison? The number after the comparison sign is called the latter term of the comparison. (4) What is the ratio? The quotient ratio obtained by dividing the preceding item by the latter item. (5) What is the basic nature of ratio? The first and second terms of a ratio are multiplied or divided by the same number at the same time (except ), and the ratio remains unchanged, which is called the basic property of the ratio. 51. Cuboid and cube (1) What is an edge? The edge where two faces intersect is called an edge. (2) What is a vertex? The point where three edges intersect is called the vertex. (3) What are the length, width and height of a cuboid? The lengths of three edges intersecting at a vertex are called the length, width and height of a cuboid. (4) What is a cube? A cuboid with equal length, width and height is called a cube. (5) What is the surface area of a cuboid? The total area of six faces of a cuboid is called the surface area of a cuboid. (6) What is the volume of an object? The size of the space occupied by an object is called its volume. 52. Circle (1) What is the center of the circle? The point at the center of a circle is called the center. (2) What is the radius? The line segment connecting the center of the circle and any point on the circle is called radius. (3) What is the diameter? The line segment passing through the center of the circle with both ends on the circle is called the diameter. (4) What is the circumference of a circle? The curve around a circle is called the circumference of a circle. (5) What is pi? We call the ratio of the circumference to the diameter of a circle pi. (6) What is the area of a circle? The size of the plane surrounded by a circle is called the area of the circle. (7) What is a sector? The figure enclosed by an arc and two radii passing through both ends of the arc is called a fan. (8) What is an arc? The part between two points on a circle is called an arc. (9) What is the central angle? The angle of the vertex on the center of the circle is called the central angle. (1) What is a symmetrical figure? If a graph is folded in half along a straight line, the graphs on both sides can completely overlap, and such a graph is a symmetrical graph. 53. What is percentage? A number indicating that one number is a percentage of another is called a percentage, and a percentage is also called a percentage or a percentage. 54. Proportion (1) What is proportion? The expression that two ratios are equal is called proportion. (2) What is the item of proportion? The four numbers that make up a proportion are called proportional terms. (3) What is an out-of-proportion term? The two terms at both ends are called out-of-proportion terms. (4) What is the proportional term? The middle two terms are called proportional internal terms. (5) What is the basic nature of proportion? In proportion, the product of two external terms is equal to the product of two internal terms. (6) What is solution ratio? The unknown term in finding the proportion is called solution ratio. (7) What is the direct proportional relationship? Two related quantities, one changes and the other changes. If the ratio (that is, quotient) of the corresponding two numbers in these two quantities is certain, these two quantities are called proportional quantities, and their relationship is called proportional relationship. (8) What is the inverse proportional relationship? Two related quantities, one changes and the other changes. If the corresponding products of these two quantities are certain, these two quantities are called opposites.