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Triangle Congruence

Triangle Congruence

Author: Jonathan Heeren
Description:

9.3.3.6 Know and apply properties of congruent and similar figures to solve problems and logically justify results. 

a) I can recognize congruent figures and justify

    congruency of two triangles.

b) I can recognize similar figures.

c) I can calculate lengths in similar figures using

    proportional reasoning including real-world

    applications.

d) I can logically justify the similarity of two triangles.

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Tutorial

5 ways to prove triangles are congruent

Please copy down these 5 ways to prove triangles congruent into your notes.

SSS, SAS, ASA, AAS theorems

This video shows how to prove 2 triangles are congruent using Side-Side-Side, Side-Angle-Side, Angle-Side-Angle, Angle-Angle-Side

Hypotenuse Leg theorem

This short video explains the only time that Side-Side-Angle theorem works (in a right triangle).

Proof Example

This is an example of a proof showing that 2 triangles are congruent.

Examples of Proofs

Here is another example of what a proof looks like

Geometry Proof Packet

This is page 2-3 of your proof packet that you received in class today. It is some examples to help you get started.

SSS and SAS congruent triangles

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Triangle Congruence WS

Recognizing congruent triangles and why

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Congruent Triangles

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Fill in the blank proofs

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Proofs of Congruent triangles

This is practice proving from start to finish

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