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# congruence and triangle inequalities.notebook

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congruence and triangle inequalities.notebook 1 October 04, 2011 Aug 249:55 PM DO NOW: Complete part a) and b) in your notebook, showing all work. Sep 235:25 AM Exploring Congruent Triangles Step 1: Fold Paper Fold in one corner of a piece of paper to form a triangle. Trace the triangle on the paper. Step 2: Cut Triangle Cut out the triangle you traced onto the tracing paper. Step 3: Label Triangle Label the triangle as shown. What parts of ABC are congruent to XYZ? Write a congruence statement.
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congruence and triangle inequalities.notebook

1

October 04, 2011

Aug 24­9:55 PM

DO NOW: Complete part a) and b) in your notebook, showing all work.

Sep 23­5:25 AM

Exploring Congruent Triangles

Step 1: Fold PaperFold in one corner of a piece of paper to form a triangle. Trace the triangle on the paper.

Step 2: Cut TriangleCut out the triangle you traced onto the tracing paper.

Step 3: Label TriangleLabel the triangle as shown.

What parts of ABC are congruent to XYZ?Write a congruence statement.

congruence and triangle inequalities.notebook

2

October 04, 2011

Sep 23­5:25 AM

Congruent Figures

For figures to be congruent, all the parts of one figure must be congruent to the corresponding parts of the other figure

Congruence Statement:

Sep 23­5:25 AM

Congruent Figures

Write a congruence statement for the triangles below:

congruence and triangle inequalities.notebook

3

October 04, 2011

Sep 8­11:43 PM

Practice: 4.2 WKBK pg 64­65 #2­7, 11­14

Sep 23­5:25 AM

Exploring Triangle Inequalities

congruence and triangle inequalities.notebook

4

October 04, 2011

Sep 23­5:25 AM

Exploring Triangle Inequalities

Sep 23­5:25 AM

Side­Angle Relationship

The angles always match their opposite sides!

congruence and triangle inequalities.notebook

5

October 04, 2011

Sep 23­5:25 AM

Let's Try an Example!

List the sides and the angles in order from smallest to greatest.

a) b)

Sep 23­5:25 AM

Using Inequalities in a Triangle

congruence and triangle inequalities.notebook

6

October 04, 2011

Sep 23­5:25 AM

How to Use Triangle Inequalities

A triangle has one side of length 12 and another of length 8.  Describe the possible lengths of the third side.

Hint:

Sep 23­5:25 AM

Now You Try!!!

1) A triangle has one side of length 5 and another of length 13.  Describe the possible lengths of the third side.

congruence and triangle inequalities.notebook

7

October 04, 2011

Sep 8­11:43 PM

Class Work: 5.5 WKBK, pgs 97­98, #4­24 even

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