Question

In a triangle ABC,if two sides AB and AC are equal,∠A=80°.find ∠B+∠C*​

Answer 1

Answer:

100°

Step-by-step explanation:

In triangle ABC by theorem when 2 sides are equal then opposite angle to this side is also equal

therefore angle B + angle C

angle A + angle B +angle C = 180°

80°+angle B + angle C = 180°

angle B + angle C = 180°- 80°

angle B + angle C = 100°

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