Thread: Congruent Triangles

1. Congruent Triangles

Given: Line AD is congruent to line ED, Line FD is congruent to Line DB.

Prove: Triangle ADC is congruent to triangle EDG.

(Hints Given: 6 steps)

2. Congruent Triangles

Hello magentarita

Originally Posted by magentarita
Given: Line AD is congruent to line ED, Line FD is congruent to Line DB.

Prove: Triangle ADC is congruent to triangle EDG.

(Hints Given: 6 steps)

Should there be an attached diagram?

Grandad

3. no....

Originally Posted by Grandad
Hello magentarita

Should there be an attached diagram?

Grandad
Not all geometric proofs come with a diagram. Do you know how to draw this one?

4. Congruent Triangles

Hello magentarita-
Originally Posted by magentarita
Not all geometric proofs come with a diagram. Do you know how to draw this one?

No, do you? It seems to me that the points C and G could be anywhere. There must be some more information if we're going to solve this one.

Grandad

5. typo.......

Originally Posted by Grandad
Hello magentarita-

No, do you? It seems to me that the points C and G could be anywhere. There must be some more information if we're going to solve this one.

Grandad
This is an obvious typo.

6. Type

Hello magentarita
Originally Posted by magentarita
This is an obvious typo.

I don't want to seem stupid, but there's nothing obvious to me here. The only thing that remotely makes sense is the following:

On the straight line ADE, AD is congruent to DE. On the straight line FDB, FD is congruent to DB. Prove that triangles ADF and EDB are congruent. (Which they are: two sides and included angle, the angles ADF and BDE being equal because they are vertically opposite.)

But this is rather a guessing game, don't you think?

Grandad

7. ok.........

Originally Posted by Grandad
Hello magentarita

I don't want to seem stupid, but there's nothing obvious to me here. The only thing that remotely makes sense is the following:

On the straight line ADE, AD is congruent to DE. On the straight line FDB, FD is congruent to DB. Prove that triangles ADF and EDB are congruent. (Which they are: two sides and included angle, the angles ADF and BDE being equal because they are vertically opposite.)

But this is rather a guessing game, don't you think?

Grandad
Thanks