Interior and Exterior Angles of Polygons

 

Objective: I know how to calculate the interior and exterior angles of polygons.

 

The formula to find the sum of the interior angles of any polygon is
sum of angles = (n - 2)180° , where n is the number of sides of the polygon.

 

The sum of exterior angles of any polygon is 360º.

 

Read the lesson on angles of a polygon for more information and examples.

 

 

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Calculate the sum of the interior angles of the following polygons.

a 10-sided polygon
answer: °

a 12-sided polygon
answer: °

a 15-sided polygon
answer: °

an 18-sided polygon
answer: °


Find the number of sides of a regular polygon with an exterior angle of

45°
answer:

36°
answer:

30°
answer:

12°
answer:

 

 

 

 

We hope that the free math worksheets have been helpful. We encourage parents and teachers to select the topics according to the needs of the child. For more difficult questions, the child may be encouraged to work out the problem on a piece of paper before entering the solution. We hope that the kids will also love the fun stuff and puzzles.

We welcome your feedback, suggestions, comments and questions about this site; please submit your feedback via our Feedback page.

 

 

Custom Search

 

© Copyright 2005, 2008 - onlinemathlearning.com
Embedded content, if any, are copyrights of their respective owners.
Useful Links:
Interactive worksheets & games
 

 

 

Custom Search