Question

a triangle with two congruent sides is always a 45-45-90 triangle.
a. true
b. false

Explanation:

Step1: Define isosceles and 45 - 45 - 90 triangles

An isosceles triangle has two congruent sides. A 45 - 45 - 90 triangle is a special right - isosceles triangle. But an isosceles triangle can have non - right angles. For example, an isosceles triangle can have angles 30°, 30°, 120°.

Answer:

B. False