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PartyBullshiit
March, 2024

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I feel so damn stupid. ( math )

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Dylan_
Posts: 9824 - Karma: 1,403
i haven't done a geometry proof in forever.

and we got one to for homework and i was wondering if someone smart here could help me.


heres the question:

The vertices of DEF triangle are D(-3,4), E(-1,-2), and F(3,2)
A) find an equation of the altitude from vertex D of triangle DEF
B) is the altitude from D also the median from D? explain your answer.
C)prove that triangle DEF is isosceles


mad karma for the answer to this. i feel so dumb right now. i should know how to do this. brain fart.



thanks NS
Nov 5 2008 8:53PM
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Mac.
Posts: 953 - Karma: 24
I haven't taken geometry in 2 years but I'll give it a try

A)well you can use the mid point formula to find the altitude. and oyu know it is on the line EF, since D is the vertex

(-1+3)/2 and (-2+2)/2 = (1,0) so that is your midpoint and so using the distance formula again you get sqrt of 32 is the altitude.


C) Using the distance formula you find that DE = sqrt of 40 and DF = sqrt of 40, and EF= sqrt of 32, which all 3 of them can be simplified.

So since 2 sides are equal then it is isoceles

and I don't really get what they are asking in B

Hope this helps
Nov 5 2008 9:22PM
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Dylan_
Posts: 9824 - Karma: 1,403
thanks for the help. fuck this i'mdone. haha
Nov 5 2008 9:39PM
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p00ps1cl3
Posts: 18 - Karma: 18
go in arts fuck math
Nov 5 2008 10:06PM
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bout_it
Posts: 1233 - Karma: 17
math is good to know. but I've always thought proofs are pointless.
Nov 6 2008 4:22PM
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