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11 Cards in this Set
- Front
- Back
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An equation that shows a mathematical relationship.
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formula
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A polygon with ten sides and ten angles.
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decagon
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A polygon with six sides and six angles.
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hexagon
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Changing numbers to other numbers that form a basic fact to estimate an answer.
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compatible numbers
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A polygon with congruent sides and congruent angles.
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regular polygon
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A number to be divided.
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dividend
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A three-sided polygon.
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triangle
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A 4-sided polygon.
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quadrilateral
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Another name for 2-dimensional figure.
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plane figure
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A flat surface that is endless in all directions.
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plane
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A polygon with eight sides and eight angles.
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octagon
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