Question

∆ABC is an isosceles triangle in which AB=AC. And measure of angle A=70 degree Find the measure of angle C .

Options :
1] 60 degree
2] 55 degree
3] 75 degree
4] 90 degree

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Answer 1

Step-by-step explanation:

Solution pic attached.

Ans is option 2

Answer 2

Answer:55°

Step-by-step explanation:

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