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Transcript 
Geometry
February 6, 2017
6.4/5 Special Parallelograms
DO NOW
Copy and complete the sentences.
1. The ________ of a rectangle are congruent.
2. The ________ of a rhombus are congruent.
3. The diagonals of a rectangle are __________.
4. The diagonals of a rhombus are __________.
Today’s Objectives
1. Review the special properties of
rhombuses, rectangles, and squares.
2. Test for each shape.
Special Parallelograms
There are three kinds of special
parallelograms: Rectangles, rhombuses, and
squares.
Is it a rectangle?
1. Are any of its corners right angles?
Is it a rectangle?
2. Are its diagonal congruent?
Is it a rhombus?
1. Are all of its sides congruent?
Is it a rhombus?
2. Are its diagonals perpendicular?
Is it a square?
If it is BOTH a rectangle AND a rhombus,
then it’s a square.
Geogebra Exploration
Practice (Worksheet)
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