CK-12 Geometry-Concepts

(Marvins-Underground-K-12) #1

http://www.ck12.org Chapter 10. Perimeter and Area



  1. Each dashed line segment isa(n)____.

  2. The red line segment isa(n)__.

  3. There are _____ congruent triangles in a regular hexagon.

  4. In a regular hexagon, all the triangles are _____.

  5. Find the radius of this hexagon.

  6. Find the apothem.

  7. Find the perimeter.

  8. Find the area.


Find the area and perimeter of each of the following regular polygons. Round your answer to the nearest hundredth.


9.


10.


11.


12.



  1. If the perimeter of a regular decagon is 65, what is the length of each side?

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