Question

1. In a triangleABC, if AB = AC and angleA = 70°, find angleB and angleC.​

Answer 1

Answer:

Since, AB = AC, therefore, ∠B=∠C

By angle sum property of triangle,

∠A+∠B+∠C=180

o

70

o

+2∠B=180

o

2∠B=110

o

∠B=55

o

Hence, ∠B=∠C=55

o

Answer 2

Answer:

Step-by-step explanation:

Since AB=AC therefore angle opp to these sides are equal...

i.e. angles B and C are equal...

now sum of the angles if the triangle is 180

A+B+C=180

70+B+C= 180

B+C=110

from above as B and C are equal

2B=110

B=C=55...

hope this helps u

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