Question

An exterior angle of a triangle is 125 dregs . If one of two interior opposite angle is 55 dregs , then the anthoer interior angle is :
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Answer 1

Step-by-step explanation:

sum of two interior angles is exterior angle

55+x is 125

x is 125 - 55 which is 70 (55+70 is 125)

so x (or second interior angle ) is 70

Answer 2

55° + x + (180 - 125) = 180

55 + 55 + x = 180

x = 70°