Regular Geometry - Lesson 4.7

Front

What is the definition of a regular polygon?

Back

A regular polygon is a polygon with all sides and all angles equal.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is 180 degrees.

Front

How do you find the measure of each interior angle of a regular polygon?

Back

Front

What is the value of x if the angles in a triangle are 50 degrees, 60 degrees, and x degrees?

Back

x = 70 degrees.

Front

What is the definition of complementary angles?

Back

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

Front

What is the value of the missing angle if one angle is 40 degrees and the other is 50 degrees?

Back

The missing angle is 90 degrees.

Front

What is the definition of supplementary angles?

Back

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

Front

If one angle is 120 degrees, what is the measure of its supplementary angle?

Back

The supplementary angle is 60 degrees.

Front

What is the formula for the area of a triangle?

Back

Front

What is the value of x if the angles in a triangle are x degrees, 70 degrees, and 40 degrees?

Back

x = 70 degrees.