Properties of Rhombus, Rectangles, and Squares

Document Sample

```					Properties of Rhombus,
Rectangles, and Squares
Chapter 6 Section 4
Objective

   Students will…
 Define and classify special types of
parallelograms
 Use properties of diagonals of rhombuses
and rectangles
Special Parallelograms

   Special parallelograms have certain
properties and so does their diagonals.

   Remember: A parallelogram is a
Rhombus

   A parallelogram with four congruent
sides.
   Think: A square tipped over
Rectangle

   A parallelogram with four right angles.
Square

   A parallelogram with four congruent
sides and four right angles.
Theorem 6-13

   If a parallelogram is a rhombus, then its
diagonals are perpendicular.

   Diagonals intersect at a right angle.
Theorem 6-14

   If a parallelogram is a rhombus, then
each diagonal bisects a pair of opposite
angles
Turn to page 377….

   Look at Example 2

   Try the “Got It” problem at the bottom.
Theorem 6-15

   If a parallelogram is a rectangle, then its
diagonals are congruent.
On page 378…

   Look at Problem 3

   Try the “Got It” problem at the bottom.
Create a Venn Diagram

   With a partner…
   Create a Venn Diagram as a graphic
organizer for special right triangles.
On page 379…

   Try problems #1-6 on your own.
Beginning on page 379…

   Complete problems #7-40 in your work
groups.
Reflection

1.   What are the three categories of
special parallelograms?
2.   What are the properties of the
diagonals of a rectangle? A rhombus?
3.   How might the properties you learned