There are three figures. Each figure has a circle and a triangle inside it.
The question asked is: How large is angle C. To answer this question, you are given four choices and you have to select one choice which is correct.
Her the choice A is correct because any triangle has three angles and the sum of these angles is 180 .
So the angle C = 180 -angle A- angle B. this can be written as angle C = 180 - (angle A+ angle B)
Answer : A. angle C = 180 - (angle A + angle B)
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