6th Grade Math Textbook, Progress

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.

13. quadrilateral 14. hexagon 15.heptagon 16. octagon


14. 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.

18. hexagon JKLMNO 19. a quadrilateral WXYZ
    with no right angles


19. concave pentagon ABCDE 21. regular triangle NRT

Solve each equation.

22. c
    98  180 23.
    d 24.a
    110  180


23. b
    2.753.60 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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