 Definition of a trapezoid, bases, legs, median and angles of a trapezoid ... |
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| Sunday, 21 February 2010 22:40 |
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| Parallelogram
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 A parallelogram is a quadrilateral with opposite sides parallel and congruent. Opposite angles are equal. ... |
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| Sunday, 21 February 2010 23:13 |
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| Rectangle
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 A quadrilateral where all interior angles are 90 degrees and opposite sides are congruent. It is also a special case of a parallelogram... |
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| A right trapezoid is a trapezoid having two right angles. An isosceles trapezoid is a trapezoid with both legs the same length. ... |
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| Sunday, 21 February 2010 23:01 |
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| Rhombus
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 A quadrilateral with all four sides equal in length is called a rhombus. A rhombus is actually just a special type of parallelogram... |
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| Sunday, 21 February 2010 23:26 |
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| Square
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 A 4-sided regular polygon with all sides equal and all internal angles 90° is called a square.... |
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Solids