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| distance around a figure; add all sides together |
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| number of square units needed to cover a surface |
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| figures that have the same size and same shape |
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| quadrilateral with four equal sides and four right angles |
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| quadrilateral with four right angles and two pairs of opposite equal parallel sides |
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| lines that are the same distance apart and do not intersect |
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| angle with the shape of a square corner |
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| a closed plane figure made with line segments |
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