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Quadrilaterals. Kimberly A. Yuretich. Objectives. To identify any quadrilateral, by name, as specifically as you can, based on its characteristics. Quadrilateral. a quadrilateral is a polygon with 4 sides. Specific Quadrilaterals.

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Quadrilaterals

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Quadrilaterals

Kimberly A. Yuretich


Objectives

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


Quadrilateral

  • a quadrilateral is a polygon with 4 sides.


Specific Quadrilaterals

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


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


Examples of Quadrilaterals


A parallelogram has two pairs of parallel sides.


Parallelogram

  • Two pairs of parallel sides

  • opposite sides are actually congruent.


A rhombus is a parallelogram that has four congruent sides.


Rhombus

  • Still has two pairs of parallel sides; with opposite sides congruent.

4 in.

4 in.

4 in.

4 in.


A rectangle has four right angles.


Rectangle

  • Still has two pairs of parallel sides; with opposite sides congruent.

  • Has four right angles


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


Square

  • Still has two pairs of parallel sides.

  • Has four congruent sides

  • Has four right angles


A trapezoid has only one pair of parallel sides.


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


Trapezoid

  • has one pair of parallel sides.

Isosceles trapezoid

trapezoids

(Each of these examples shown has top and bottom sides parallel.)


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


Example of a Kite

4 in.

2 in.

2 in.

4 in.


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