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2
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a polygon with six sides
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3
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each angular point of a polygon
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4
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a plane figure with at least three straight sides and angles
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7
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a triangle with three equal side lengths
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8
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a type of triangle with no equal side lengths
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9
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60,30,90 and 45,,45,90 are examples of these triples
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11
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equations usually in ax^2+bx+c=0 form
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12
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Shapes with corresponding sides are
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14
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a polygon with four sides
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15
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a common name for 90 degree angles
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17
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a triangle with two equal side lengths
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20
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A triangle with a ninety degree angle
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