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

What is 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

How do you calculate an exterior angle of a triangle?

Back

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

Front

If one interior angle of a triangle is 45 degrees, what is the sum of the other two angles?

Back

The sum of the other two angles is 135 degrees.

Front

What is the relationship between the interior and exterior angles of a triangle?

Back

The exterior angle is equal to the sum of the two non-adjacent interior angles.

Front

If two angles of a triangle are 87 degrees each, what is the measure of the third angle?

Back

The third angle measures 6 degrees.

Front

What is the measure of an angle in a triangle if the other two angles are 44 degrees and 87 degrees?

Back

The measure of the third angle is 49 degrees.

Front

How can you find an unknown angle in a triangle if you know the other two angles?

Back

You can find the unknown angle by subtracting the sum of the known angles from 180 degrees.

Front

What is the formula for finding the measure of an interior angle of a triangle?

Back

The formula is: Interior Angle = 180 degrees - (Sum of the other two angles).

Front

What is the measure of an angle if it is complementary to a 45-degree angle?

Back

The measure of the complementary angle is 45 degrees.