congruence and triangle inequalities.notebook
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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
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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
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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