7-1 Angles of Polygons

Front

What is the SUM of the angle measures in a triangle (3 sides)?

Back

180°

Front

Find the value of y if the angle measures are 125°, 135°, 140°, and 110°.

Back

125°

Front

The measures of one interior angle of a regular polygon is 140°. What is the name of the polygon?

Back

Nonagon

Front

What is the sum of exterior angles for a 27-gon?

Back

360°

Front

What is the formula for the sum of interior angles in a polygon?

Back

180(n−2)

Front

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

Back

5 sides (Pentagon)

Front

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

Back

120°

Front

What is the relationship between the number of sides and the sum of interior angles in a polygon?

Back

Sum = 180(n−2), where n is the number of sides.

Front

What is the measure of each exterior angle in a regular octagon?

Back

45°

Front

If one exterior angle of a polygon is 30°, how many sides does the polygon have?

Back

12 sides (Dodecagon)