Question

the measure of angle of a triangle are y° y + 10° and y- 40° find measure of each angle ​

Answer 1

First angle = y

Second angle = y+10

Third angle = y-40

The sum of triangles is 180

=> y + y + 10 + y - 40 = 180

=> 3y - 30 = 180

=> 3y = 210

Therefore y = 70

Angle A = 70

Angle B = 80

Angle C = 30

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