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Polygon Classification, Sides, Vertices, Diagonals, and Convexity
Grade Level
GRE
GRE.011 Polygon Classification, Sides, Vertices, Diagonals, and Convexity
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🔴 Hard
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For a convex polygon, the number of sides plus the number of vertices plus the number of diagonals is 55. How many sides does the polygon have?
A
8
B
10
C
9
D
11
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