anonymous
  • anonymous
Geometry Problem. Medal & Fan to whoever can help.
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
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.
1 Attachment
anonymous
  • anonymous
find the slope of both lines
anonymous
  • anonymous
If the slope of the first line is 5 then the perpendicular line will be the negative reciprocal which is -1/5

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
Find the slope for line BC first
anonymous
  • anonymous
Do you know how to do that?
anonymous
  • anonymous
May you remind me how it is done @10115658 . It is getting late where I am currently and my brain is sort of dead. I'm trying to take notes for an exam at the moment so just trying to see how it is solved and write it down.
anonymous
  • anonymous
Pick 2 points on the line
anonymous
  • anonymous
C and B?
anonymous
  • anonymous
Or you mean within the line?
anonymous
  • anonymous
within the line, i'll pick the first one (1,1)
anonymous
  • anonymous
I suppose we can do (2,2) as well?
anonymous
  • anonymous
i don't think that's a point on the line
anonymous
  • anonymous
what are the coordinates for point B
anonymous
  • anonymous
oh wait you confused me.
anonymous
  • anonymous
(4,5)
anonymous
  • anonymous
Thats right
anonymous
  • anonymous
now we use the slope formula, rise/run
anonymous
  • anonymous
|dw:1432956614754:dw|
anonymous
  • anonymous
1 would be the slope?
anonymous
  • anonymous
wait, i think i did that wrong too.
anonymous
  • anonymous
4/3(?)
anonymous
  • anonymous
4/3 is correct
anonymous
  • anonymous
what would be the negative reciprocal of that?
anonymous
  • anonymous
I apologize, I have not had much time to rest so I see myself making a lot of mistakes.
anonymous
  • anonymous
-0.08(?)
anonymous
  • anonymous
you don't have to apologize, happens all the time
anonymous
  • anonymous
uhhh
anonymous
  • anonymous
ok, what is the reciprocal of 4/3?
anonymous
  • anonymous
i'm getting -0.0833333333 according to google for negative reciprocal.
anonymous
  • anonymous
and then the reciprocal would be 0.08. unless of course there's a formula i'm not remembering.
anonymous
  • anonymous
you don't need a calculator for this
anonymous
  • anonymous
Remind me how we determine it then if you would? Haha
anonymous
  • anonymous
|dw:1432956822160:dw|
anonymous
  • anonymous
.. -facepalm- 3/4 .75
anonymous
  • anonymous
now make it negative
anonymous
  • anonymous
so would it be the same case for negative reciprocal? -3/4 -.75?
anonymous
  • anonymous
ok, so now we find the slope of the other line. If the slope is -3/4 then we know the lines are perpendicular
anonymous
  • anonymous
so we are looking at EF now?
anonymous
  • anonymous
yes. So do the same thing we did before
anonymous
  • anonymous
First find 2 points
anonymous
  • anonymous
f is -1,1, e is -5, 4. just from that, i already know they are indeed perpendicular.
anonymous
  • anonymous
yep (4-1)/(-5-(-1)) = -3/4
anonymous
  • anonymous
Is it that simple to answer the question? Oh my lord, I feel dumb.
anonymous
  • anonymous
once you understand it its simple, same with all math i guess

Looking for something else?

Not the answer you are looking for? Search for more explanations.