# Answers - PowerPoint PPT Presentation

1 / 7

Answers. Proving Triangle Congruence - SSS. Math 2 - Lesson 17 Mr. Lopez. Triangle Congruence - SSS. (Side-Side-Side) Postulate Two triangles are congruent if the three sides of one triangle are congruent to the three sides of another triangle. A. D. C. B. E. F.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

## Proving Triangle Congruence - SSS

Math 2 - Lesson 17

Mr. Lopez

### Triangle Congruence - SSS

(Side-Side-Side) Postulate

• Two triangles are congruent if the three sides of one triangle are congruent to the three sides of another triangle.

A

D

C

B

E

F

ΔABC = ΔDEF by SSS

### Correct Labeling

• It is incorrect if you label a diagram whether it’s an angle or any polygon in the order where the segments do not correspond with each other.

• Ex:

D

A

E

C

F

B

ΔABC = ΔDEF is correct (sides correspond)

ΔABC = ΔEDF is not correct

ΔCBA = ΔDEF is not correct

ΔCBA = ΔFED is correct

### How to use SSS in a proof

Ex 1:

Given: AB and CD bisect each other at point E. AC = DB

Prove: ΔAEC = ΔBED

A

C

E

D

B

### How to use SSS in a proof

Ex 2: (Shared Side Triangles)

Given: AD = BC, AB = DC

Prove: ΔADB = ΔCBD

A

D

B

C

C

A

B

D

E

F

### How to use SSS in a proof

Ex 3: (Overlapping Triangles)

Given: AB = CD, AF = CE, BE = DF

Prove: ΔAFB = ΔCED