Question

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

Answer 1

Answer:

C. Right isosceles

Step-by-step 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