Question

geometry proofs help?

Below is a two-column proof incorrectly proving that the three angles of ΔPQR sum to 180°:
http://prntscr.com/96ke28

Which statement will accurately correct the two-column proof?
The measure of angle ZRY equals 180° by definition of supplementary angles.
Angles QRY and PQR should be proven congruent before the construction of line ZY.
The three angles of ΔPQR equal 180° according to Substitution.
Line ZY should be drawn parallel to segment QR.

Answer 1

@GabeBae

Answer 2

Oh hello

Answer 3

hey Gabe

Answer 4

do you know this

Answer 5

Which module?

Answer 6

it's the segment exam, but it's from module 3

Answer 7

Is this part 2?

Answer 8

yeah

Answer 9

I passed my module 3 exam but it's been a long time

Answer 10

I was never good at proofs so I'm surprised I passed my module 3 exams too

Answer 11

Is there a picture with it?

Answer 12

yeah, I put a link to it in the original question. it's the picture of the proof they provide, but there's nothing besides that.

Answer 13

I think it's the 3rd answer not sure
I'm sorry if i'm wrong

Answer 14

@nikato do you agree or?

Answer 15

yea. i agree.
You substitute ZRY with RPQ+PRQ+PQR

Answer 16

okay, thanks.