C. never
a. 9
c. 11
a. always
b, sometimes
d. cannot be determined
4. Find the sum of the measures of the interior angles of a triangle.
a. 180°
b. 360°
C. 540°
d.720°
C5. Which of the following terms refer to segments joining any two nonconsecutive vertices of a polygon?
a. sides
b. vertices
c. diagonals
d. polygon
b.
6. How many sides does a decagon have?
.
b. 10
d. 12
7. How many sides does a convex polygon have if the sum of the measures of its interior angles is 1,080°?
a. 6
b.8
C. 10
d. 12
8. Which of the following figures is NOT a polygon?
b. A
(0)
d.
9. Which of the following is considered as a regular polygon?
a. trapezoid
b. rhombus
C. square
d. rectangle
10. Which of the following figures represents a convex polygon?
d.
b.
a.
C.
a.
b.
C.
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