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Quadrilaterals Kimberly A. Yuretich

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Objectives To identify any quadrilateral, by name, as specifically as you can, based on its characteristics

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Quadrilateral a quadrilateral is a polygon with 4 sides.

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Specific Quadrilaterals There are several specific types of quadrilaterals. They are classified based on their sides or angles.

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A quadrilateral simply has 4 sides – no other special requirements.

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Examples of Quadrilaterals

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A parallelogram has two pairs of parallel sides.

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Parallelogram Two pairs of parallel sides opposite sides are actually congruent.

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A rhombus is a parallelogram that has four congruent sides.

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Rhombus Still has two pairs of parallel sides; with opposite sides congruent. 4 in.

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A rectangle has four right angles.

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Rectangle Still has two pairs of parallel sides; with opposite sides congruent. Has four right angles

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A square is a specific case of both a rhombus AND a rectangle, having four right angles and 4 congruent sides.

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Square Still has two pairs of parallel sides. Has four congruent sides Has four right angles

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A trapezoid has only one pair of parallel sides.

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An isosceles trapezoid is a trapeziod with the non-parallel sides congruent.

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Trapezoid has one pair of parallel sides. Isosceles trapezoid trapezoids (Each of these examples shown has top and bottom sides parallel.)

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An kite is a quadrilateral with NO parallel sides but 2 pairs of adjacent congruent sides.

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Example of a Kite 2 in. 4 in. 2 in.

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