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Geometry
February 2, 2017
6.4 Special Parallelograms
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Give as much detail as possible:
1. What do you know about a square?
2. What do you know about a rectangle?
Today’s Objectives
1. Explore the special properties of
rhombuses, rectangles, and squares
Review: Parallelogram
Definition: A quadrilateral with two pairs of
parallel sides.
Properties 1-3
Properties 4-5
Rectangle
Definition: An equiangular quadrilateral
Rectangle: Properties
1. All parallelogram properties and…
2. Rectangles have congruent diagonals
Rhombus
Definition: An equilateral quadrilateral
Rhombus: Properties
1. All parallelogram properties and…
2. A rhombus has perpendicular
diagonals
3. The diagonals of a rhombus
bisect the opposite angles.
Square
Definition: A regular quadrilateral
Square: Properties
1. All properties of parallelograms,
rectangles, and rhombuses.
Geogebra Exploration
Practice (Worksheet)
Homework
p. 379-380 9-23 ODDS