Question

A classmate said that AB||DC based on the diagram below explain your classmates error

Answer 1

http://assets.openstudy.com/updates/attachments/5242ca66e4b0a03c277f5db5-cravescoffee%2526catharsis-1380108963777-cusersjohnpicturesplane.png

Answer 2

@563blackghost

Answer 3

http://openstudy.com/users/ganeshie8#/updates/5242ca66e4b0a03c277f5db5

Answer 4

Thanks I guess

Answer 5

@3mar can you help?

Answer 6

Of course. I will help as much as I know and as I can.

Answer 7

With 563blackghost, you are in good hands!

Answer 8

@BuckyBarnes

Answer 9

Ok. I will go now and when you are ready just call me.
Salam!

Answer 10

Okay sorry I was busy

Answer 11

@3mar

Answer 12

I am back.

Answer 13

@3mar I still need help

Answer 14

@563blackghost are you sure that's the correct answer because I was thinking it would be either he use the ultimate into your angles theorem incorrectly or you couldn't prove that AB||DC with the information given because the congruent angles aren’t formed by the same transversal

Answer 15

Alternate interior^

Answer 16

@phi can you help me?

Answer 17

There are lots of ways to be wrong. To know what they want for an answer, we need to know what choices they gave you.

But your
***couldn't prove that AB||DC with the information given because the congruent angles aren’t formed by the same transversal***

sounds like a good answer (if it's one of the choices)

Answer 18

They don't give me choices it's an essay question @phi

Answer 19

In that case, go with the idea that
alternate interior angles are congruent, but only if the angles are formed by the same transversal. In the picture, the angles are formed by different transversals, and so the theorem does not apply

Answer 20

So the student incorrectly puts in the alternate interior angles but his mistake was that there were two transversal's so the therom that he applied wasn't supposed to be apply due to the circumstances?

Answer 21

@phi?

Answer 22

sounds ok. If you put in what the theorem says, that would be good.

Answer 23

Are you sure this is correct?

Answer 24

Welcome back after two weeks!

I hope you got it now!

Phi is correct! Be sure!

Answer 25

Nice presentation, phi!