Question

if 2 equal sides of an isoceles triangle is 45, then what is the measure of the third angle?​

Answer 1

Ans:- In isosceles triangle let Angle B= C = 45°

In triangle ABC

Angle A + Angle B + Angle C = 180° (angle sum property of triangle)

Angle A + 45 + 45 = 180

Angle A = 180 - 90

therefore Angle A = 90 °

hence, the measure of third angle is 90°

and it is also a right angled isosceles triangle as it one angle is equal to 90° .

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