Interior Angles of Triangles Practice

Front

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

Back

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

Front

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

Back

It is a right triangle.

Front

What is the measure of the third angle if two angles of a triangle measure 40° and 60°?

Back

The third angle measures 80°.

Front

True or False: The interior angles of a triangle can add up to more than 180°.

Back

False.

Front

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

Back

Each angle in an equilateral triangle measures 60°.

Front

If two angles of a triangle are equal, what type of triangle is it?

Back

It is an isosceles triangle.

Front

What is the formula to find the missing angle in a triangle?

Back

The formula is: Missing angle = 180° - (Angle 1 + Angle 2).

Front

If a triangle has angles measuring 30° and 50°, what is the measure of the third angle?

Back

The third angle measures 100°.

Front

What is the relationship between the angles in a triangle?

Back

The angles in a triangle are supplementary, meaning they add up to 180°.

Front

If one angle of a triangle is 70° and another is 40°, what is the measure of the third angle?

Back

The third angle measures 70°.