Question

A certain triangle has two 45° angles. What type of triangle is it?

A. Acute Triangle
B. Right triangle.
C. Right isosceles
D. Acute isosceles

Answer 1

C. Right isosceles

Explanation:

We have 2 angles that are the same, that means two sides have to be the same. That makes the triangle isosceles

There are 3 angles in a triangle. They add to 180

45+45+x = 180

90+x=180

90-90+x=180-90

x=90

The other angle is a 90 degree angle. A ninety degree angle is a right angle.

That makes the triangle a right isosceles triangle