How to cut an arrow twice and turn it into a five-pointed star?

Find a position under the arrow to cut it so that the three sides of the new arrow are equal, and then cut it along the symmetry axis to get two "V" shapes. You can draw a five-pointed star on paper, and you can see that two "V" shapes and the remaining one can form a five-pointed star.

The pentagram has always been closely related to Venus and its worship. Among the possible reasons for this relationship, the most credible is the observation of prehistoric astronomers. Seen from the earth, Venus's orbit around the sun repeats every eight years. Its five intersections just draw a nearly perfect five-pointed star.

Mathematical geometry

A pentagram is a polygon with the least number of sides. The simplest drawing method is to draw a regular Pentagon first, connect all the corners with straight lines, and erase the original Pentagon. You can also extend the sides of the original pentagon until they intersect, thus getting a big pentagram.

If a line segment has a length (line), then there are two similar regular pentagons in the graph. What a "line segment" is, so are lines, and their intersections may also change. For example, on the flag of Morocco, the green five-pointed star has a black outline and does not "cross" the intersecting lines. This is different from the five-pointed star on the Ethiopian flag. The five-pointed star is completely yellow and has no outline.