Joke Collection Website - Talk about mood - The third question is about your solution.
The third question is about your solution.
choose one
Solution:
Fold, then ∠ 1=∠2.
∠ 1=∠3 according to the parallel offset angle.
∴∠ 1=∠2=∠3
∵∠2+∠3= 130? (outer corner)
∴2∠ 1= 130?
∴∠ 1=65?
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