Day 02F Triangle Sum & Triangle Exterior Angles

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 is 50 degrees and another is 60 degrees, what is the measure of the third angle?

Back

The third angle is 70 degrees, calculated as 180 - (50 + 60).

Front

What is the measure of an exterior angle of a triangle?

Back

An exterior angle of a triangle is equal to the sum of the two opposite interior angles.

Front

If angle A measures 40 degrees, what is the measure of the exterior angle at vertex A?

Back

The exterior angle at vertex A is equal to the sum of the other two interior angles.

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

If angle X is 25 degrees, what is its complement?

Back

The complement of angle X is 65 degrees, calculated as 90 - 25.

Front

What is the definition of supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

If angle Y is 110 degrees, what is its supplement?

Back

The supplement of angle Y is 70 degrees, calculated as 180 - 110.

Front

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

Back

To find an unknown angle in a triangle, subtract the sum of the known angles from 180 degrees.

Front

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

Back

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