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Mathematics 18 Online
emmagrace231 (emmagrace231):

Help!

emmagrace231 (emmagrace231):

emmagrace231 (emmagrace231):

@princeharryyy @Will.H

OpenStudy (will.h):

Am not sure how I would form that but Since lines with same slopes are parallel and lines with slopes of product -1 are perpendicular and since Line r is perpendicular to s And line t is perpendicular to s Then it is clear that lines r and t have the same slopes thus are parallel

OpenStudy (vijeya3):

Well you just need to use the supplementary angle theorem |dw:1479324277600:dw| Now angle 4 =90 degrees (given) angle 6= 90 degrees (given) so adding the two ,we get angle 4+ angle 6= 180 degrees Now we know that if the sum of the co-interior angles is 180 then the two lines are parallel to each other (I assume that ya are familiar with that theorem) And hence r || t Hence proved Hope this is helpful :) Lemme know if ya have a doubt^-^

emmagrace231 (emmagrace231):

Thanks!

OpenStudy (vijeya3):

np^-^

emmagrace231 (emmagrace231):

Could you help with one more? @Vijeya3

OpenStudy (vijeya3):

sure what's ur question? make another post and then tag me:)

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