Question

Please explain it step by step it's urgent​

Answer 1

Answer:

yes,the given triangle is isosceles .

EXPLANATION:

"external angle in a triangle

= sum of two opposite angles of the external angle"

=> 130°=65°+angle A

=>angle A=130°-65°

=65°

Since two angles are equal then the opposite sides of the angles are also equal.

So,the given triangle satisfies the isosceles triangle condition.

:.the given triangle is isosceles triangle.