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Mathematics 7 Online
OpenStudy (superwholock221):

Write a proof to show that the diagonals of a parallelogram bisect one another. Be sure to create and name the appropriate geometric figures. This figure does not need to be submitted.

OpenStudy (superwholock221):

i kinda dont understand what im suppost to do

OpenStudy (redstonemak3r):

you have to write down some evidence on what you think is the diagonals of a parallelogram bisect one another and create one and name it

OpenStudy (superwholock221):

|dw:1467231750754:dw|

OpenStudy (superwholock221):

Ok so i made a thingy so does that mean something like this

OpenStudy (superwholock221):

|dw:1467231845458:dw|

OpenStudy (redstonemak3r):

|dw:1467231829629:dw|

OpenStudy (superwholock221):

So like segment A intersects C and segment B intersects D

OpenStudy (redstonemak3r):

yea

OpenStudy (superwholock221):

ohh ok thank you againnn

OpenStudy (superwholock221):

oh and i got that last question right thanks to you

OpenStudy (redstonemak3r):

its an indirect proof, so 3 steps :- 1) you start wid the opposite of wat u need to prove 2) arrive at a contradiction 3) conclude

OpenStudy (redstonemak3r):

since you want to prove 'diagonals of a parallelogram bisect each other', you start with the opposite of above statement, like below :- step1 : Since we want to prove 'diagonals of a parallelogram bisect each other', lets start by assuming the opposite, that the diagonals of parallelogram dont bisect each other.

OpenStudy (superwholock221):

ok

OpenStudy (redstonemak3r):

Since, we assumed that the diagonals dont bisect each other, OC≠OA OD≠OB Since, OC≠OA, △OAD is not congruent to △OCB

OpenStudy (redstonemak3r):

hope this helps

OpenStudy (superwholock221):

it is thank you thanks for actually explaining it too

OpenStudy (redstonemak3r):

np

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