Question

Use the given information to prove that a is parallel to b

Answer 1

Given: angle 2 is congruent to angle 7
Prove: a is parallel to b

Answer 2

Do you have the list of proof rules?

Answer 3

Yes I do I think

Answer 4

Okay, look for the rules about angles. It should say something around "Congruent Angle" or something.

Answer 5

There is only
Definition of Congruent Angles

Answer 6

Angle 2 and Angle 7 are congruent... why? Well, because aren't they alternate exterior angles?

Answer 7

What about corresponding angles... such as angle 3 and angle 7... those are congruent...

Answer 8

Keep this info in mind: If two parallel lines are cut by a transversal, the alternate interior angles are congruent.

Answer 9

Plus: If two lines are cut by a transversal and the alternate interior angles are congruent, the lines are parallel.

Answer 10

same goes for alternate exterior and corresponding angles.

Answer 11

make sense @kplove4ever?

Answer 12

Yes it does and I understand all of it i just do not understand proofs

Answer 13

That is basically the proof right there....

If two lines are cut by a transversal then the alternate interior, exterior, and corresponding angles are congruent.

Answer 14

Yes i tried putting that down though but it says it is wrong

Answer 15

Oh, this is online? Is there a way for you to show the picture of this page?

Answer 16

That doesn't work for me.

Answer 17

What do you mean?

Answer 18

The attached file.

Answer 19

Well that is really the only way i could show you

Answer 20

Based off of what I have told you... and what you said you know. You should be able to figure this one out. Just sit back and think is all I can really tell you. It seems as though this online program is looking for specific words.

Answer 21

Ya it is

Answer 22

@kplove4ever Look in your list of postulates for proving lines parallel.

Post which one it is.

In many Geometry courses, the postulate for proving lines parallel is this: If two lines are cut by a transversal so that corresponding angles are congruent, then the lines are parallel.

Using that postulate, a person proves the theorem which you are doing.

Answer 23

Do you think wording has to be specific because this is some online excercise... @Directrix ?

Answer 24

It gives me options of what to put there

Answer 25

Yes, wording. But, it is the order in which these theorems have been proved in the text that matters. Of supreme importance is which one of the ways, the book author assumed as a postulate to prove the lines parallel. It has to be in KP's book or e-text.

Also, without the fill-in proof template, we have no idea which steps the question author used.

We are scrambling in the dark without this information above.

Answer 26

>>It gives me options of what to put there

If we don't know what is "there," then we can't help with options.

Answer 27

Here is what we see as the questions:

Answer 28

@MathLegend Can you tell @kplove4ever how to do a screenshot or some other means of showing the problem? Thanks.

Answer 29

@Jamierox4ev3r it is @kplove4ever

Answer 30

I'm sorry i am logging off it seems that no one can help me and i am getting really frustrated over this

Answer 31

We can help you if you upload the image of the problem. Please do that. We cannot answer a question when we do not know what the question is. @kplove4ever

You could click on the blue DRAW button below and write the problem by hand.