Lesson 6.1 Polygon Angle Sum Theorem

Front

A polygon with six sides is called a(n) _____________.

Back

hexagon

Front

Find the value of x in the angle sum of a polygon: 2x + 20 + 3x + 40 = 180.

Back

x = 32°

Front

Find the measure of ONE exterior angle of a regular decagon.

Back

36°

Front

Find the sum of the interior angles of a nonagon.

Back

1260°

Front

A polygon with 5 sides is called a(n) _____________.

Back

pentagon

Front

What is the formula to calculate the sum of interior angles of a polygon?

Back

(n - 2) × 180°, where n is the number of sides.

Front

What is the measure of each interior angle of a regular hexagon?

Back

120°

Front

How many sides does a polygon have if the sum of its interior angles is 720°?

Back

8 sides (octagon).

Front

What is the measure of each exterior angle of a regular pentagon?

Back

72°

Front

If one interior angle of a regular octagon is 135°, what is the measure of its exterior angle?

Back

45°