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write an indirect proof to show that opposite angles of a parallelogram are congruent.

Question

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Will give medal!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
write an indirect proof to show that opposite angles of a parallelogram are congruent.

anonymous · Answer

do your own geometry homework

anonymous · Answer

this website is for kids to get help with homework, so i dont wont to here that

e.mccormick · Answer

Well, what have you figured out about it?

anonymous · Answer

nothing it is an essay question, no graph or picture or anything just the words

anonymous · Answer

you have to write any type of proof to prove it

e.mccormick · Answer

Well, it says an indirect proof.  Do you know what that part means?

anonymous · Answer

yes in a way thats what i need help with how to write an idirect proff for this

e.mccormick · Answer

Well, what is an indirect proof in your mind?

anonymous · Answer

isn't it like the opposite of the actual proof

anonymous · Answer

ill tell you but this sight is to get help not answers

anonymous · Answer

lol

anonymous · Answer

the proof is
first statement
two sides of a parallelogram are not congruent
second statement
by the properties of a parallelogram two sides are always congruent and parallel
THIrd statEMEnt OPPOSitE SideS oF A pARrellegram arE EQuAL

anonymous · Answer

thx

anonymous · Answer

At least someone was nice enough to help.And yes Kag wasn't rude but a lot of other people were. jeez.

anonymous · Answer

the order of statements is that the first one is a contradiction opposite the second one a known fact the third one is back to the original statement but if you can add a common sense statement between the first and second one it is a definite right answer as long as it still makes since

e.mccormick · Answer

An indirect proof, sometimes called a proof by contradiction or negation, is where you assume that something is false, then prove yourself wrong, therefore it must be true. http://www.regentsprep.org/Regents/math/geometry/GP3b/indirectlesson.htm http://www.dummies.com/how-to/content/how-to-do-an-indirect-proof.html

anonymous · Answer

thank you @e.mccormick

e.mccormick · Answer

Now, it says you ned to prove that opposite angles of a parallelogram are congruent.  Well, that means you need to start with something opposite to that.  Either something that has opposite angles that are congruent but is not a parallelogram, OR a parallelogram where the opposite angles of are not congruent.  Either of these is a contradiction.  Then prove it false.

anonymous · Answer

Thanks or the medal

anonymous · Answer

you are welcome

anonymous · Answer

@kag do you have a gaming system

anonymous · Answer

i do

anonymous · Answer

Just a question but who all here thinks I am a guy or girl?

e.mccormick · Answer

Chat in messages or the chat bar, not questions.

anonymous · Answer

ok

anonymous · Answer

im new to this whats the chat box????????????

e.mccormick · Answer

On the bottom bar.  Chats for off topic stuff.