Question

In triangle ABC, AC=BC, AC is extended to D, angleA=70°, angle BCD=x°, find x​

Answer 1

In triangle ABC, AC=BC, AC is extended to D, angleA=70°, angle BCD=x°, find x

$\huge\fcolorbox{red}{gold}{αηѕωєя}$

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=55o

Answer 2

Answer:

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