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Angles of Polygons

Study Slideshow

What is the sum of the exterior angles of a regular pentagon?

360 degrees

15

How many sides does a heptagon have?

7

5

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

1,800 degrees

15

What is the measure of an interior angle of a regular 20-gon?

162 degrees

15

What is the measure of an exterior angle of a regular nonagon?

40 degrees

15

The sum of the interior angles of a convex polygon is 8,640 degrees. Find the number of sides.

50 sides

20

One exterior angle of a regular polygon is 10 degrees. Find the number of side.

36 sides

15

One interior angle of a regular polygon is 172 degrees. Find the number of sides.

45 sides

20

The interior and exterior angles of a polygon always form a _____________?

linear pair

10

Convex or Concave?

Concave

5

What is the proper name for this polygon?

Hexagon

5

What is the sum of the interior angles of a 13-gon?

1,980 degrees

15

What is the sum of all the exterior angles of a convex 15-gon?

360 degrees

15

What is the measure of one interior angle of a regular 17-gon?

158.8 degrees

15

What is the measure of one exterior angle of a regular 14-gon?

25.7 degrees

15

One exterior angle of a regular polygon is 14.4 degrees. Find the number of sides.

25 sides

20