Question

Find the measure of angle A

Answer 1

10x + 85 + 8x + 5 = 180 (all angles if a triangle add up to 180 degrees)

18x + 90 = 180
18x=90
x=5

Angle A:
8x+5 (sub in x=5)
8(5)+5
=45 degrees

Angle A is equal to 45 degrees!! I hope this helps :) (i love your pfp btw)