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|dw:1437636777764:dw|

Is it given that the both horizontal lines shown in the diagram are "parallel" ?

Yes lol I drew the best I could

in geometry we use "arrow" signs to indicate that the lines are parallel
|dw:1437637316997:dw|

Oh I guess it does have arrows I just didnt know I needed them

so 7 and 8 would be complementary?

Ok so it would be any angle like thaT? It gives her options for each one and she chose 7 and 8

Yes, the angles \(7\) and \(8\) also form a supplementary pair
|dw:1437637588173:dw|

Great. What does alternate exterior mean?

Her options were 1 & 3, 2& 6, 4 &7, 7 & 1

as the name says,
exterior means outside
alternate means they are on alternate sides

I'll show an example for this pair, then it becomes clear

so 7 & 1 on mine would be

Yes!

Can you tell me what congruent is? her options are 1 & 4, 4 & 5, 1 & 5, 7 & 8

"congruent" means "equal"

1 & 5

Here is a theorem :
corresponding angles are congruent when the lines are parallel

|dw:1437638008666:dw|

._. that was the converse of the theorem.

Yes, corresponding angles are "congruent" when lines are parallel
so their measures are "equal"

in geometry we generally use "congruent" and "equal" interchangeably

|dw:1437638256448:dw|

If the angle 2 is 70 degrees, the measure of angle 1 is 110 degrees right?

Yes, because 2 and 1 are supplementary angles
so they must add up to 180

Yes @UsukiDoll looks there are four pairs of corresponding angles

70+70 = 140 though ?

Right but they are both acute angles so it cant be more than 90 degrees

true...

vertical angles?

If angle 2 is 70 degrees what is the measure of angle 6? its 110 right?

I lied its also 70

Ok can I post another one?

|dw:1437638698030:dw|

What is the vertical angle of angle 4? she put 2..

Nope.

|dw:1437638841032:dw|

So the vertical angel of 7 would be 8

Yes

angle 1 and angle 3 are not congruent right?
and 2 and 7 are also not congruent right?

Hey wait, has the diagram changed ?

Lol yes sorry

Okay just making sure

angles 2 and 7 are called "alternate interior angles"

are the horizontal liens shown parallel this time also ?

So they aren't congruent?

yes they are

"alternate interior angles" are congruent when lines are parallel

Her question is are 1 & 3 congruent to eachother and are 2 & 7 congruent to eachother

|dw:1437639119061:dw|

So 2 and 7 are 1 and 3 arent

Correct. I see she knows some geometry!

Lol yes thank you for your help!

np

@ganeshie8 what happened to your medals? you had 4?

where did you get that?

last two numbers `0/1` is the range of questions

questions are sorted based on time

saw it... I've done 100 XD
0 to 100 that's cool

Have fun :)

oh I will I did 1700 and got to my first medal ever. XD