Question

In triangle ABC , if AB =BC and angle A= 80 degrees than angle C=?

Answer 1

here AB=BC
so it is a emulator triangle
in an emulator triangle the angles other than intersecting by both equal side will be same
so in this case angle A and C are same
so angle C=80°
angle B=180-(80+80)=20°

Answer 2

A triangle with the two equal side is an isoceles triangle.

In isoceles triangle two angles are equal

As give Angle A is 80°

And as we know A+B+C=180→ B+C=180–80

As angle B and C are equal

2B=100→ Angle B =50° ans.

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