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6. The sum of the measures of the interior angles of a convex-n-gon is_
A. S = 140°(n-2) B. S = 160°(n-2) C. S=180°(n-2) D. S= 190°(n-2)
7. What do you call a polygon with 3 sides?
A pentagon
B. quadrilateral C. Triangle
D. All of them
8. Determine the measure of an exterior angle of a quadrilateral.
A. 45°
B. 60°
C. 90°
D. 120°
9. Choose the sum measures of an angle of a heptagon.
A. 360° B. 540°
C. 720
D. 9000
10. Solve the sum measures of a pentagon using 180°(n-2). Show the solution below.
A. 180° B. 360°
C. 540°
D. none of them