Question

Plz solve these questions
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It’s urgent plz send me the answer

And the question is: For each triangle below, find the unknown interior angle marked a and the exterior angle marked b.

Answer 1

Answer:

A)62°+63°+a =180(Angle sum property of triangle)

125+a=180

a=180-125

a=35

a+b=180 (linear pair)

35+b=180

b=180-35

b= 140°

B