Quadrilaterals

Geometry

Mr. Zampetti

Unit 3, Day 4

Vocabulary

• Quadrilateral: A polygon with 4 sides.

• Consecutive angles: Two angles whose vertices are endpoints of a side.

• Opposite angles: Two angles that are not consecutive angles.

A B

D C

Parallelogram

• Characteristics of a parallelogram:

Opposite sides are parallel.

Opposite sides are congruent.

Opposite angles are congruent.

Consecutive angles are supplements.Diagonals bisect each other.

Rectangle

• A parallelogram with four right angles.

The diagonals of a rectangle are congruent.

Rhombus

• A parallelogram in which all sides are of equal length.

The diagonals of a rhombus are perpendicular to each other.

The diagonals of a rhombus bisect its angles.

Square

• A rectangle in which all sides are of equal length.

Trapezoid

• What is a trapezoid?

• A quadrilateral in which only one pair of opposite sides are parallel.

Isosceles Trapezoid

• A trapezoid in which the nonparallel sides are equal.

Kite

• A kite is a quadrilateral with two pairs of adjacent sides congruent and no opposite sides congruent.

http://craftapple.files.wordpress.com/2007/08/kite-2.jpg http://www.mathwarehouse.com/geometry/quadrilaterals/images/kites/kite_picture.jpg

Quadrilateral Relationships

Quadrilaterals

Parallelograms

Rectangles Rhombus

Squares

Trapezoids

Isosceles Trapezoids

Kite

http://www.quia.com/pop/36149.html

Homework

Work Packet:

Quadrilaterals