Interior and exterior angles of triangles

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

Define an exterior angle of a triangle.

Back

An exterior angle of a triangle is formed by one side of the triangle and the extension of an adjacent side.

Front

What is a remote interior angle?

Back

A remote interior angle is an interior angle of a triangle that is not adjacent to a given exterior angle.

Front

If one angle of a triangle measures 44 degrees, what is the maximum possible measure of the other two angles?

Back

The maximum possible measure of the other two angles is 136 degrees (180 - 44 = 136).

Front

What is the relationship between an exterior angle and its remote interior angles?

Back

The measure of an exterior angle is equal to the sum of the measures of its two remote interior angles.

Front

If angle A measures 62 degrees in a triangle, what is the measure of the other two angles if one of them is 54 degrees?

Back

The measure of the other angle is 64 degrees (180 - 62 - 54 = 64).

Front

What is the definition of an interior angle?

Back

An interior angle is an angle formed between two sides of a triangle that meet at a vertex.

Front

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

Back

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

Front

What is the measure of an angle if the other two angles in a triangle are 40 degrees and 72 degrees?

Back

The measure of the unknown angle is 68 degrees (180 - 40 - 72 = 68).

Front

What is the definition of corresponding angles?

Back

Corresponding angles are angles that are in the same position on two parallel lines cut by a transversal.