# Quadrilaterals - PowerPoint PPT Presentation

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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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#### Presentation Transcript

Kimberly A. Yuretich

### Objectives

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

• a quadrilateral is a polygon with 4 sides.

• 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.

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.

4 in.

2 in.

2 in.

4 in.