+

# Triangle Congruence

##### Rating:
(3)
• (2)
• (1)
• (0)
• (0)
• (0)
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.

(more)

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

No credit card required

28 Sophia partners guarantee credit transfer.

281 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 25 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

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.

of

## Triangle Congruence WS

Recognizing congruent triangles and why

of

of

of

## Proofs of Congruent triangles

This is practice proving from start to finish

of