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°.

Front

If one angle of a triangle is 60° and another is 90°, what is the value of the missing angle?

Back

30°

Front

What is the value of the missing angle if two angles are 45° and 45°?

Back

90°

Front

In a triangle, if one angle measures 70°, what is the sum of the other two angles?

Back

110°

Front

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

Back

60°

Front

If a triangle has angles measuring 50° and 60°, what is the measure of the third angle?

Back

70°

Front

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

Back

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

Front

If the angles of a triangle are represented as x, y, and z, what equation represents the Triangle Sum Theorem?

Back

x + y + z = 180°

Front

What is the value of x if one angle is 40° and another is 100°?

Back

40°

Front

How do you find the missing angle in a triangle?

Back

Subtract the sum of the known angles from 180°.