Question

Triangle ABC has been rotated 90° to create triangle DEF. Using the image below, prove that perpendicular lines have opposite and reciprocal slopes. You must show all of your work to receive credit.

Triangles ABC and DEF are shown. A is at 4, 2. B is at 4, 5. C is at 1, 2. D is at 2, negative 4. E is at 5, negative 4. F is at 2, negative 1. Line BC and line EF intersect at point 0, 1.

@jigglypuff314

Answer 1

i dont understand

Answer 2

I am confused too >,<
how would they intersect at (0,1)?! whut

Answer 3

@jigglypuff314

Answer 4

oh xD picture helps

Answer 5

find the slope the BC made
find the slope that EF made
say that they are opposite and reciprocal :P

Answer 6

OH OKAY:)

Answer 7

WOULD THAT SLOPE BE 3/3?

Answer 8

yes :) and the fraction 3/3 can be simplified to...

Answer 9

1?

Answer 10

yep ^_^