Question

Use vocabulary: Classify each of the trianglesTriangles may be placed in more than one category.

Answer 1

Triangle A:

It has two equal sides, so it is isosceles

It has a right angle, so it is a right triangle

We conclude that triangle A is right and isosceles.

Triangle B:

It has two equal sides, so this is an isosceles triangle.

Triangle C:

It has a right angle, but none of its sides are equal, so this is a right triangle.

Triangle D:

All of its sides are equal, so this is an equilateral triangle.

Triangle E:

Two of its sides are equal, so this is an isosceles triangle.