Isosceles and Equilateral Triangles

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

The sides of an equilateral triangle have...

Back

equal measures.

Front

What is the measure of each angle in an equilateral triangle?

Back

60°.

Front

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

Back

180°.

Front

What is the measure of the missing angle if two angles are 60° and 70°?

Back

50°.

Front

In an isosceles triangle, how many equal sides are there?

Back

Two equal sides.

Front

What is the relationship between the base angles of an isosceles triangle?

Back

The base angles are equal.

Front

If one angle of a triangle is 90°, what type of triangle is it?

Back

Right triangle.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the definition of an isosceles triangle?

Back

A triangle with at least two equal sides.