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16 Cards in this Set
- Front
- Back
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Triangle
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3 sides
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Quadrilateral
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4 sides
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Pentagon
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5 sides
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Hexagon
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6 sides
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Heptagon
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7 sides
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Octagon
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8 sides
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Nonagon
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9 sides
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Decagon
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10 sides
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Dodecagon
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12 sides
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Pentadecagon
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15 sides
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n-gon
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n sides
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Sum of all interior angles
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180(n-2)
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Measure of each interior angle (if equiangular)
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180(n-2) / n
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Measure of each exterior angle (if equiangular)
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360 / n
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Sum of all exterior angles
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360
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Total # of diagonals
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n(n-3) / 2
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