7.1-7.3 Extra Practice

Front

What is the measure of ONE interior angle in a regular triangle (3 sides)?

Back

60°

Front

What is the formula for the sum of the exterior angles of a polygon?

Back

S=360°

Front

Find the value of X if the angle measures are 30°, 60°, and X° in a triangle.

Back

X=90°

Front

What is the name of a polygon with 9 sides?

Back

Nonagon

Front

What is the name of a polygon with 8 sides?

Back

Octagon

Front

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

Back

180°

Front

What is the formula for the sum of the interior angles of a polygon with n sides?

Back

(n-2)×180°

Front

What is the measure of each interior angle in a regular hexagon (6 sides)?

Back

120°

Front

What is the name of a polygon with 7 sides?

Back

Heptagon

Front

What is the measure of each exterior angle in a regular pentagon (5 sides)?

Back

72°