Question

WORTH 50 POINTS PLEASE HELP MEEEE!!!!!!!
The numbers up and down there are both 10 degrees.

Answer 1

50 degrees.

Explanation:

Answer 2

40+10=50

180-50=130

10+20=30

180-30=15

angle at center add up to 360

360-(130+150)=80°

The triangle is an equilateral.

180-80=100

both base angles are 50°