Measure of angle A=180- Measure of angle C + Measure of angle B 2x=180-(90+3x) 2x=180-90-3x +3x. +3x 5x=180-90 5/5x=90/5 x=18 Measure of angle is A= 2x A=2(18) A=36
Measure of angle B = 3x 3(18) 54
Simply, Measure of angle A is 36, Measure of angle B is 54 and measure if angle C is 90