Tell whether the polygon is regularor not regular. Then tell
whether it is convexorconcave. Explain your answers.
Draw each polygon and find its number of sides or vertices
to complete the table.
9.
10.
11.
12.
Find the number of diagonals in each polygon.
- quadrilateral 14. hexagon 15.heptagon 16. octagon
- In your answers for exercises 13–16, does it matter
if the polygons are convex or concave? Explain.
Draw the polygon described. Then draw and name its diagonals.
- hexagon JKLMNO 19. a quadrilateral WXYZ
with no right angles - concave pentagon ABCDE 21. regular triangle NRT
Solve each equation.
- c 98 180 23. d 24.a 110 180
- b2.753.60 26. 310 a 360 27. 165 c 180
2
3
4
9
Name Number of Sides Number of Vertices
heptagon 7?
nonagon? 9
decagon 10?
dodecagon 12?
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