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by jigoku_snow
Sat Aug 06, 2011 8:50 am
Forum: Discrete Math
Topic: finding the area of parallelogram / combination/ permutation
Replies: 3
Views: 6264

Re: finding the area of parallelogram / combination/ permuta

sorry for the late reply. The line AB will be linear; what you have posted is a quadratic. How did you derive this? since i cant find the gradient so i use the distance formula. i let B=(x,y) and D=(a.b) What was your logic for including "2C1"? well, is because there are 2 'O' s. but i thi...
by jigoku_snow
Wed Aug 03, 2011 1:56 pm
Forum: Discrete Math
Topic: finding the area of parallelogram / combination/ permutation
Replies: 3
Views: 6264

finding the area of parallelogram / combination/ permutation

1) ABCD is a parallelogram and the coordinates of A, B, C are (-8, -11), (1, 2) and (4, 3) respectively. Find the area of the parallelogram. [i]i manage to find that D =( -5.-10) . area of parallelogram = AD x height i'm stuck here. how to find the height? i tried it by finding the angle between AB...

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