The measure of angle A in ABC is twice the measure of angle B and the measure of angle C is 20° less than the measure of angle B. What are the measures of the angles in ABC?

m∡A = 100°

m∡B = 50°

m∡C = 30°

Step-by-step explanation:

let 'x' = m∡B;  50°

let '2x' = m∡A;   100°

let 'x-20' = m∡C;   30°

x + 2x + x - 20 = 180

4x - 20 = 180

4x = 200

x = 50

do you have any choices

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