Question

Look at the figure shown below.



A student made the table shown below to prove that XY is equal to YZ.

Answer 1

@helpplease555 Please post the figure:)

Answer 2

done:) ,

Answer 3

can anyone help please ? :(

Answer 4

@zepp I think you could help here

Answer 5

Subtle step :D

Answer 6

i tink it might be reflexive but i cant really explain good .

Answer 7

and what ? haha:)

Answer 8

@zepp what is it?

Answer 9

before adding angles, we must proves their congruency

Answer 10

Angle XYZ = Angle XYZ by reflexivity :D

Answer 11

thanks:)nd now "why won't it work without this step"

Answer 12

it is simply MZ=NX but you should really work on this one. http://www.mathopenref.com/triangle.html

Answer 13

i don't understand .

Answer 14

if you scrolled down and read the webpage that I posted, you will find the necessary tools you need to answer the question.

Answer 15

so @zepp, can you explain why the prooof wouldnt have worked withoutat step ? :)

Answer 16

You can't include something in a proof if it you haven't proved that's undeniably true. :)

Answer 17

lol @ zepp

Answer 18

Not sure if I understand that kind of proof, sorry. :( I'm only pretty good in English.. I suck at math, I only know enough to survive.....

Answer 19

so, first we know that <M and <N are equal, do you agree?

Answer 20

and we know that angles in a straight line add up to 180, right?

Answer 21

ok, so let us imagine <m is 40 degrees so that we can find other angles, is that fine?

Answer 22

ok...so this is a diagram with our new measurements

Answer 23

and I am stuck..lol