CK-12 Geometry Concepts

http://www.ck12.org Chapter 6. Polygons and Quadrilaterals

8. nonagon


9. triangle


10. pentagon


11. 50-gon


12. heptagon


13. 34-gon
    14.ChallengeEach interior angle forms a linear pair with an exterior angle. In a regular polygon you can use two
    different formulas to find the measure of each exterior angle. One way is^360
    ◦
    n and the other is 180

◦−(n−^2 )^180 ◦

n

(180◦minus Equiangular Polygon Formula). Use algebra to show these two expressions are equivalent.

15.Angle PuzzleFind the measures of the lettered angles below given thatm||n.