6-2 properties of parallelograms - poudre school...

Post on 21-Aug-2020

4 Views

Category:

Documents

0 Downloads

Preview:

Click to see full reader

TRANSCRIPT

6­2 Properties of Parallelograms

1

January 07, 2010

Jan 4­12:01 PM

6­2 Properties of Parallelograms

ObjectiveUse relationships among sides,

 angles, and diagonals of parallelograms.

6­2 Properties of Parallelograms

2

January 07, 2010

Jan 4­12:05 PM

6­1 Review

Attachment

6­2 Properties of Parallelograms

3

January 07, 2010

Jan 4­12:08 PM

Warm­Up

E

F

H

G

2. Which sides of the parallelogram are    congruent?

3.  Which angles of the parallelogram are     congruent?

Use the figure at the right.1. Name the postulate or theorem that     justifies the congruence ΔEFG ≅ ΔGHE.

6­2 Properties of Parallelograms

4

January 07, 2010

Jan 4­12:28 PM

F

H

G

E

A PARALLELOGRAM is a quadrilateral with opposite sides parallel.

6­2 Properties of Parallelograms

5

January 07, 2010

Jan 4­12:44 PM

Which property of parallelograms would you use to solve for x?

Then solve for x.

Example #1

6­2 Properties of Parallelograms

6

January 07, 2010

Jan 4­12:45 PM

Which property of parallelograms would you use to solve for y?

Then solve for y.

Example #2

6­2 Properties of Parallelograms

7

January 07, 2010

Jan 4­1:23 PM

F

H

G

E

Given parallelogram EFGH, what will    F and    E add up to?

Example #3

6­2 Properties of Parallelograms

8

January 07, 2010

Jan 4­12:48 PM

Third Property of Parallelograms

A1

2

3

B

D

E

4C

Prove Theorem 6­3Given:  

 Prove:

Statements Reasons

6­2 Properties of Parallelograms

9

January 07, 2010

Jan 4­12:49 PM

Solve for a and z.4z

125a ­ 4a + 1

2F

H

G

E

Example #4

6­2 Properties of Parallelograms

10

January 07, 2010

Jan 4­12:49 PM

Example #5

Solve for x and y.

6­2 Properties of Parallelograms

11

January 07, 2010

Jan 4­1:09 PM

Homework

Pg. 315

#1, 2, 7­10, 12, 15, 16, 38, 46

Attachments

shapemakers[1].gsp

top related