Question

Help with two Geometry questions please! Fan and testimonial and medal!

Answer 1

Okay, so I'm slightly confused... I really need to start paying attention during class. :///

Answer 2

LOL

Answer 3

Triangle ACD and triangle ACB share what side?

Answer 4

Side AC

Answer 5

So that's what goes in line 2

AC = AC (reflexive property)

Answer 6

So that goes in the reflexive

Answer 7

Yeah! Okay.

Answer 8

So what goes in the third line?

Answer 9

well that part is a bit convoluted, but I think it's trying to get you to say

"if AD || BC, then the alternate interior angles are congruent" (which leads you to say that < 2 = < 3)

Answer 10

so do I write AD II BC or do I write corresponding or something?

Answer 11

This is that part that is confusing me the most.

Answer 12

To be honest, I have no clue what they want you to write *exactly* (since computers are very picky sometimes), but it will be along those lines of what I wrote above.

Answer 13

The basic idea is that if you have 2 parallel lines, then the alternate interior angles will be congruent (if you have a transversal line cutting both parallel lines)

Answer 14

Okay.. gotcha.. So line 4 would be DCA = BAC??

Answer 15

good, by what property?

Answer 16

Is that the Angle Side thing?

Answer 17

I think that would be Side, Side, Angle which is SSA

Answer 18

you have the following to choose from

SSS
SAS
ASA
AAS
HL

Answer 19

SSA is the only property that isn't a congruence property

Answer 20

Lol.. I'm good at this... xP

Answer 21

NOT!!

Answer 22

well just keep practicing and you'll get better

Answer 23

you do have 2 pairs of sides

but notice how the angle is in relation to those sides

Answer 24

Is it SAS?

Answer 25

yep

Answer 26

because the angle is between the sides

Answer 27

Great!!! :D Okay... so then 5 would be C=A

Answer 28

no because that's too vague

Answer 29

however you can say < 1 = < 4 and that's more specific

Answer 30

Okay
then six is AB II CD and what would be in the last blank?

Answer 31

yep and the last statement is ALWAYS what you want to prove

Answer 32

the reasoning behind why AB || CD is true is the converse of the last theorem I put up

"if a pair of alternate interior angles are congruent, then the lines are parallel"

Answer 33

something along those lines

Answer 34

Okay thanks so so much!!!

Answer 35

you're welcome