8. Which of the following figure is easier to use in constructing regular polygon?
A. Circle B. Rectangle C. Square D. Triangle
9. Which of the following is NOT a regular polygon?
A. Circle
C. Regular hexagon
B. Equilateral Triangle
D. Square


1. Julian drew a regular octagon and measured one of its interior angles. He
got 135º. What is the sum of the measure of the interior angles of this
regular polygon?
A. 1020 B. 1080
C. 1800"
D. 2160
2. The measure of the interior angles of a convex pentagon are 102°, 88°,
92", and 140°. What is the measure of the interior angle of the fifth vertex?
A 116
B. 118
C. 120
D. 122°
3. Koko is planning to make a flower stand that has a base of a regular
octagon. At what angle should he cut the lumber to frame the base?
A 125
B. 135
C. 145
D. 155
4. If each exterior angle of a regular polygon is 60', how many sides does
the polygon have?
A. 6
B. 8
C. 10
D. 12
5. What is the measure of the third angle of a triangle if the measures of
the two angles are 36 and 70°?
A. 37
B. 440
C. 74°
D. 87°​