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Mathematics 11 Online
OpenStudy (gabylovesyou):

Write an indirect proof to show that a rectangle has congruent diagonals. Be sure to create and name the appropriate geometric figures. This figure does not need to be submitted.

OpenStudy (gabylovesyou):

@ganeshie8 @phi @AccessDenied

OpenStudy (phi):

Here is what an indirect proof means http://regentsprep.org/Regents/math/geometry/GP3b/indirectlesson.htm

OpenStudy (gabylovesyou):

ok.. so i would first start with A rectangle doesn't have congruent diagonals

OpenStudy (phi):

yes. That is as far as I got so far.

OpenStudy (gabylovesyou):

lol! what happens next ? ;s

OpenStudy (phi):

draw a picture of a rectangle, label the sides , show the right angles. draw in a diagonal

OpenStudy (gabylovesyou):

|dw:1396376755171:dw|

OpenStudy (phi):

show the angles are all 90º

OpenStudy (gabylovesyou):

|dw:1396376914251:dw|

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