Triangle Sum Theorem

Front

What does the Triangle Sum Theorem state?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

What type of triangle has all sides of different lengths?

Back

Scalene triangle.

Front

What type of triangle has all sides of equal length?

Back

Equilateral triangle.

Front

What type of triangle has one angle that measures 90 degrees?

Back

Right triangle.

Front

How many angles in an acute triangle are acute?

Back

All three angles are acute.

Front

If two angles of a triangle measure 50 degrees and 60 degrees, what is the measure of the third angle?

Back

70 degrees.

Front

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

Back

Each angle measures 60 degrees.

Front

What is the relationship between the angles in a right triangle?

Back

One angle is 90 degrees, and the sum of the other two angles is 90 degrees.

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

If one angle of a triangle is 120 degrees, what can you say about the other two angles?

Back

They must be acute angles, and their sum must be 60 degrees.