Practice Triangle Sum Theorem

Front

What is the Triangle Sum Theorem?

Back

The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.

Front

If one angle of a triangle measures 90 degrees, what can be said about the other two angles?

Back

The other two angles must be acute, meaning they each measure less than 90 degrees.

Front

What is the measure of the third angle in a triangle if the first two angles measure 45° and 45°?

Back

The third angle measures 90°.

Front

Can a triangle have two obtuse angles?

Back

No, a triangle cannot have two obtuse angles because the sum of the angles would exceed 180 degrees.

Front

If a triangle has angles measuring 30° and 60°, what is the measure of the third angle?

Back

The third angle measures 90°.

Front

What type of triangle has all angles measuring less than 90 degrees?

Back

An acute triangle.

Front

What type of triangle has one angle measuring exactly 90 degrees?

Back

A right triangle.

Front

What type of triangle has one angle measuring more than 90 degrees?

Back

An obtuse triangle.

Front

If a triangle has angles measuring 70° and 50°, what is the measure of the third angle?

Back

The third angle measures 60°.

Front

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

Back

In a right triangle, one angle is 90 degrees, and the sum of the other two angles is 90 degrees.