Question

Please help with all but thw one I did!

Answer 1

To solve this problem, you have to know all the identities and rules to figure out that:

∠1 = ∠7 = ∠3 = ∠5 = ∠9 = ∠11

and

∠2 = ∠4 = ∠8 = ∠6 = ∠9 = ∠12

10. ∠3 + ∠2 = 180

72 + ∠3 = 180

m∠3 = 108°

11. ∠4 = ∠12

m∠12 = 84°

12. ∠1 = ∠3 = ∠5

m∠5 = 127°

13. ∠9 + ∠12 = 180

132 + ∠12 = 180

m∠12 = 48°

14. ∠6 + ∠12 = 180

69 + ∠12 = 180

m∠12 = 111°

15. ∠1 = ∠9 = ∠11

m∠11 = 110°

16. ∠4 = ∠12 = ∠10

∠9 + ∠10 = 180

∠9 + 72 = 180

m∠9 = 108°