Triangle & Angle Measurement Relationships

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 degrees.

Front

What are complementary angles?

Back

Complementary angles are two angles whose sum measures 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose sum measures 180 degrees.

Front

In a right triangle, what is the measure of the right angle?

Back

The measure of the right angle is 90 degrees.

Front

If one angle of a triangle measures 50 degrees and another measures 60 degrees, what is the measure of the third angle?

Back

The third angle measures 70 degrees.

Front

What is the relationship between the angles in an isosceles triangle?

Back

In an isosceles triangle, the angles opposite the equal sides are equal.

Front

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

Back

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

Front

If two angles are complementary and one angle measures 30 degrees, what is the measure of the other angle?

Back

The other angle measures 60 degrees.

Front

What is the equation used to find the missing angle in a triangle if one angle is represented as x?

Back

The equation is: x + known angle 1 + known angle 2 = 180.

Front

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

Back

Each angle in an equilateral triangle measures 60 degrees.