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definitions

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
rectangle?   a parallelogram with 4 right angles.  
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square?   a parallelogram with 4 congruent angles and 4 congruent sides  
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rhombus?   parallelogram with 4 congruent sides, diagonals are perperndicular to eachother  
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quadrilateral   4 sided figure  
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concave?   any polygon with one interior angle more than 180 degrees  
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convex?   any polygon where all interior angles are less than 180 degrees  
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regular polygons?   all sides are congruent all interior angles are congruent  
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1st attributes   both pair of opposite sides are congruent  
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parallelogram?   4 sided figure a quadrilateral with both pair of opposite sides are parallel.  
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trapezoid?   a quadrilateral with ONE pair of opposite sides are parallel  
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isosceles trapezoid   non parallel sides are congruent  
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2nd attribute   diagonals bisect eachother  
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3rd attribute   opposite angles are congruent  
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4th attribute   consecutive interior angles are supplementary  
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attribute of a rectanlge   diagonals are congruent  
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