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, 1. B is at 4, 5. C is at 1, 1. D is at 1, negative 4. E is at 5, negative 4. F is at 1, negative 1. Line BC and line EF are shown intersecting one another.

Answer 1

This is easy!

Answer 2

word written :/

Answer 3

I can do that.I'll explain it best as I can hun.

Answer 4

:D thanks guuurrlllll

Answer 5

Alright, hold on.

Answer 6

:)

Answer 7

um.. what grade is this math..?

Answer 8

i believe 10

Answer 9

I'm in 9th..

Answer 10

:?

Answer 11

hmm.. it seems the ABC Moves down 5 units then reflects iteslf..

Answer 12

*itself

Answer 13

so i just wwrite that?

Answer 14

hold on.
let me check. sorry for the time.. :(

Answer 15

okay :(

Answer 16

Nevermind, I drew it out. Draw it out on graph paper and put another on top, trace ABD then put a pencil in the middle of the axis where x and y cross, then rotate the paper 90 degrees

Answer 17

but it's just needs to be word writtten :/

Answer 18

could i just write that? :/

Answer 19

I know. You'll get it I promise. Just do what I said, tracing it.

Answer 20

See, it's been rotated clockwise 90 degrees

Answer 21

C is F,
A is D,
B is E.

Answer 22

so...... hm.....

Answer 23

Triangle ABC was rotated clockwise 90 degrees, now the perpendicular and reciprocal lines I don't know about.. so that will be easy if you look it up on google.

Answer 24

*reciprocal slopes

Answer 25

Sorry Hun, I tried my best..

Answer 26

thanks. ill just write that :D

Answer 27

Don't forget you have to prove the perpendicular lines and reciprocal slopes.

Answer 28

this is hard....

Answer 29

I know.. I'm gonna hate this year.. if I even make it there..

Answer 30

HAHA DONT WORRY!!

Answer 31

I failed 9th grade on purpose in the beginning.. the rest of the year I was working my butt off and I still didn't make it.. I was missing one credit..