Help with a geometry proof.
Just a small geometry proof that I'm stuck on a little. I'm preparing for my semester exam tomorrow.
Can anyone help me with this proof? http://min.us/mySabvJjc29b
Show every step. Two-column.
December 16, 2010
9 Comments • Newest first
[quote=Emoticons]l//m, <7 congruent to <10 (Given)
<10 congruent to <13 (Vertical Angles)
<7 congruent to 15 (Corresponding Angles)
<13 congruent to 15 ( Substitution or transitive (ithink)
t // s ( Corresponding Angles Converse)
IDKK THIS MAY BE WRONG.[/quote]
Wow, I completely forgot about transitive property. ._. Now I remember...
Tbh, this looks like it could work. My teacher probably would've wanted a few things thrown in there, but yeah, for the most part.
@CarltonWheezer : Try clicking on the first poster's link. Maybe that'll work.
i have a 96 in geometry right now, but it wouldn't open
good luck with your final
i can't see it so i can't help you
and good luck remembering all the postulates, theorems, and formulas
EDIT
okay that is a LONG proof.... but pretty basic...
you basically have to prove that angles are supplementary and congruent
and parallel lines have the same measurements for corresponding angles
yeahh....
btw you can't prove that angles are corresponding until you prove everything else.
If two lines are cut by a transversal and alt.int.angles are congruent, then the lines are parallel
It has to start like.
l // m - Given
<10 congruent <2 - Corresponding angles
<10 congruent <7 - Given
<7 congruent <2 - What? Can't use substitution in congruence, only equality. nao wat
[quote=germy300]I did think about it. <10 is congruent to <2. <10 is congruent to <7. <7 is congruent to <2. I don't know how to put this in proof form. To get full credit you have to point out everything. :x[/quote]
Make a table with statement/reason
for statement do what you just did
for reason put in the theorem or prove why that's the case
[quote=LarryNL]stuck or lazy?
if you want help, ok but you want the whole thing worked out without having to think about it?[/quote]
I did think about it. <10 is congruent to <2. <10 is congruent to <7. <7 is congruent to <2. I don't know how to put this in proof form. To get full credit you have to point out everything. :x
Something to do with parallelograms and congruent angles.
[quote=MoldyPeanut][url=http://img195.imageshack.us/img195/5924/doityourself.png]I think it's right[/url][/quote]
I can't if I'm stuck. It's not homework.