Geometry Triangle Congruence - Should be easy?

  • Thread starter Thread starter luke8ball
  • Start date Start date
  • Tags Tags
    Geometry Triangle
AI Thread Summary
The discussion revolves around determining triangle congruence using given information. Participants analyze whether AB equals BC, with some arguing that it cannot be concluded due to insufficient justification, while others assert that congruence can be established through right triangles and the SAS criterion. There is confusion regarding the angle bisector and its relevance to the problem, with clarification sought on when an angle can be considered bisected. The conversation highlights the importance of proper justification in geometric proofs. Overall, the thread emphasizes the need for clear reasoning in triangle congruence problems.
luke8ball
Messages
22
Reaction score
0
Geometry Triangle Congruence - **Edited to include diagram**

Homework Statement



Hi! The three simple geometry problems are in the attached photo. Sorry if they're difficult to read. I haven't seen this information in so long, and could use some help. :D

Can you use the given information to determine that (AB) = (BC) ̅? Justify your answer.


The Attempt at a Solution




1. I would say that we cannot conclude AB = BC, because we have ***, which you can't conclude anything from.

2. Yes, AB = BC, because we have two right triangles, BE = BE, and AE = EC. Thus the hypotenuses must be the same?

3. I feel like the answer is yes here. Can one say that BD bisects angle ABC? Therefore, we have ASA?

Thanks a lot guys/girls!
 

Attachments

  • Picture1.png
    Picture1.png
    61.2 KB · Views: 532
Last edited:
Physics news on Phys.org


luke8ball said:

Homework Statement



Hi! The three simple geometry problems are in the attached photo. Sorry if they're difficult to read. I haven't seen this information in so long, and could use some help. :D

Can you use the given information to determine that (AB) = (BC) ̅? Justify your answer.

The Attempt at a Solution



1. I would say that we cannot conclude AB = BC, because we have ***, which you can't conclude anything from.

2. Yes, AB = BC, because we have two right triangles, BE = BE, and AE = EC. Thus the hypotenuses must be the same?

3. I feel like the answer is yes here. Can one say that BD bisects angle ABC? Therefore, we have ASA?

Thanks a lot guys/girls!
You are correct. Answers are: no, yes, yes.

For #1 you haven't given a reason.

For # 3, how do you know the the angle is bisected? BTW: You could have used SAS immediately.
 
Thanks Sammy!

For #1, I apparently typed a banned word via the abbreviation for angle-side-side. Whoops!

Is that a legitimate reason now to say no?

Also, for #3, I see now that the angle bisection comment is irrelevant and not necessarily justified either. When can you say that an angle is bisected?

Thanks again!
 
luke8ball said:
Thanks Sammy!

For #1, I apparently typed a banned word via the abbreviation for angle-side-side. Whoops!

Is that a legitimate reason now to say no?

Also, for #3, I see now that the angle bisection comment is irrelevant and not necessarily justified either. When can you say that an angle is bisected?

Thanks again!
Yes, for #1 A$$ is as good as SSA .
 
Back
Top