Isosceles and Equilateral Triangles

Front

What is the name of a triangle with at least two equal sides?

Back

Isosceles Triangle

Front

What is the name of a triangle with all three sides equal?

Back

Equilateral Triangle

Front

In an isosceles triangle, what can be said about the angles opposite the equal sides?

Back

The angles opposite the equal sides are also equal.

Front

What is the sum of the interior angles of any triangle?

Back

180 degrees

Front

If one angle of an isosceles triangle is 50 degrees, what are the measures of the other two angles?

Back

Both angles are 65 degrees.

Front

What is an equiangular triangle?

Back

A triangle where all three angles are equal.

Front

If a triangle has angles measuring 60 degrees each, what type of triangle is it?

Back

Equilateral Triangle

Front

In an equilateral triangle, what is the measure of each angle?

Back

60 degrees

Front

What is the base of an isosceles triangle?

Back

The side that is not equal in length to the other two sides.

Front

If the base of an isosceles triangle is 10 cm and the equal sides are each 7 cm, can this triangle exist?

Back

No, it cannot exist because the sum of the lengths of the two equal sides must be greater than the base.