Question

?? I need help. With this... it’s about angles

Answer 1

Answers according to the given drawing.

11) ∡1 + ∡2 = 180° => 12) ∡1 and ∡2 are supplementary angles

13) ∡3 + ∡4 = 180° => 14) ∡3 and ∡4 are supplementary angles

15) if it is ∡1≅∡3 then it is ∡2≅∡4

Good luck!!!