Triangle angle sum theorem

Front

What is the Triangle Angle Sum Theorem?

Back

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

Front

If one angle of a triangle is 95 degrees and another is 45 degrees, what is the measure of the third angle?

Back

The third angle is 40 degrees (180 - 95 - 45 = 40).

Front

What is the measure of angle b if angle a is 36 degrees and angle c is 108 degrees?

Back

Angle b is 36 degrees (180 - 36 - 108 = 36).

Front

How do you find the measure of a missing angle in a triangle?

Back

To find a missing angle, subtract the sum of the known angles from 180 degrees.

Front

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

Back

The third angle is 70 degrees (180 - 50 - 60 = 70).

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.

Front

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

Back

The third angle is 90 degrees (180 - 30 - 60 = 90).

Front

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

Back

Each angle in an equilateral triangle measures 60 degrees.

Front

If angle x is 45 degrees and angle y is 45 degrees, what is the measure of angle z in the triangle?

Back

Angle z is 90 degrees (180 - 45 - 45 = 90).

Front

What is the measure of an angle if the other two angles in the triangle are 70 degrees and 40 degrees?

Back

The measure of the angle is 70 degrees (180 - 70 - 40 = 70).