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anonymous
 one year ago
how do u show that ABCD is a parallelogram
anonymous
 one year ago
how do u show that ABCD is a parallelogram

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mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0find the length of AD and BC first

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how im i supposed to do that @mathmath333

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0dw:1440709546470:dw use pythagorus for AD

phi
 one year ago
Best ResponseYou've already chosen the best response.1there are 2 ways: show opposite sides have the same length (use the "distance formula") or show opposite sides have the same slope finding the slope is probably less work. to do either way, you first need the (x,y) coords of each corner.

phi
 one year ago
Best ResponseYou've already chosen the best response.1Here are the 4 points A (0,4) B (5,6) C (6,2) D (1,0) now show the slopes of AB and CD are the same can you do that ? (remember slope is change in y divided by change in x)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im i suppose to divide 0,4 @phi

phi
 one year ago
Best ResponseYou've already chosen the best response.1do you remember how to find the slope between (0,4) and (5,6) ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i have to subtract 4 and 6

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then subtract 0 and 5 and divided???

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is the slope 2/5 @phi

phi
 one year ago
Best ResponseYou've already chosen the best response.1yes. the side AB has slope 2/5 the opposite side is CD find the slope between points C and D

phi
 one year ago
Best ResponseYou've already chosen the best response.1you should get 2/5 . remember it is change in y divided by change in x (6,2) (1,0)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do i do the same for number 74

phi
 one year ago
Best ResponseYou've already chosen the best response.1you are not done yet. you also have to show the sides AD and BC have the same slope (opposite sides have the same slope) so far you showed sides AB and CD have the same slope. now do AD and BC

phi
 one year ago
Best ResponseYou've already chosen the best response.1close but not 1/4 . also notice it should be negative (the line slopes down)

phi
 one year ago
Best ResponseYou've already chosen the best response.1what is change in y? what is change in x ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.00,4 1,0 0 minus 1 is 1 4 minus 0 is 4

phi
 one year ago
Best ResponseYou've already chosen the best response.1ok, and which is change in y

phi
 one year ago
Best ResponseYou've already chosen the best response.1remember the points are (x,y) pairs in other words, 4  0 is the change in y the slope will be (40)/(01) = 4 / 1 = 4

phi
 one year ago
Best ResponseYou've already chosen the best response.1finally show line BD has slope 4

phi
 one year ago
Best ResponseYou've already chosen the best response.1for Q74, show line LM has slope m and line MN has slope 1/m (flipped and negated)
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