Question

A quadrilateral is a parallelogram if both pairs of opposite sides are equal in length. IF A(-1,0)B(3,8)C(3,2) and D are consecutive vertices of a parallelogram what are the coordinates of point D?

Answer 1

@terenzreignz

Answer 2

Oh no, this is geometry XD

Answer 3

Can you just draw it?

Answer 4

well i actually know the answer,, its (-1,6) yeah i did it by trial and error,, i there a way where you could solve it, ?

Answer 5

There is. But it only works in this case, since you have points (3,2) and (3,8)
That means the other two points must also have the same x-coordinate, in this case (-1

catch me so far?

Answer 6

yup

Answer 7

Now, as for the coordinate, you have to look at the change, or the difference.
In the other two points (3,2) and (3,8), the y coordinate increased by 6.

There must be the same increase in the y-coordinates of the other two points.
(-1,0) and therefore (-1, 0+6)

Answer 8

oh,, thaaanks

Answer 9

Note that this was a very special case, okay?

(I hate geometry -_-)

Answer 10

oh, okaay

Answer 11

Oh, don't get me wrong, I'm quite good at it ;)
Just not that good at TEACHING it... D:

Answer 12

yeah,, i know

Answer 13

you competed in international competitions too.

Answer 14

That's entirely untrue. :D
I refused to join :>

Answer 15

ahah ,,i was just testing you

Answer 16

Test me all you want XD

I'll do my best to help you with these geometry woes, but I probably will not be as effective as I was when it was only algebra :D