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Geometry

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
Order of proofs.   1. Quadrilateral 2. Trapezoid 3. Parallelogram 4. Rectangle/Rhombus 5. Square  
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Quadrilateral.   Shape with four sides.  
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Parallelogram.   1. Both opposite sides are congruent OR 2. Both opposite sides are parallel OR 3. One pair of opposite sides are congruent and parallel OR 4. Diagonals bisect each other Fact: Opposite angles are congruent.  
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Rectangle   Mandatory: is a parallelogram 1. Diagonals are congruent OR 2. One right angle  
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Rhombus.   Mandatory: is a trapezoid and parallelogram 1. two consecutive sides are congruent OR 2. diagonals are perpendicular Fact: Opposite angles are congruent, diagonals bisect the opposite angles.  
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Square.   Mandatory: is a parallelogram, rectangle, AND a rhombus  
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Trapezoid.   1. one pair of parallel opposite sides  
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Isosceles trapezoid.   Mandatory: is a trapezoid 1. non parallel sides are congruent Fact: diagonals are congruent  
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Right trapezoid.   Mandatory: is a trapezoid 1. one right angle  
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