Show that these three points , P(-8,3), Q(-3,4),R(-6,-7), Form a right angled triangle and name the right angle?
There are two ways of doing this:
1) determine the slopes for all lines, and the pair that have a right angle will have a negative inverse slope.
2) determine the distances PQ, QR, and RP. If any one distance squared is equal to the sum of the other distances squared, it is a right triangle.
If needed, I will be happy to critique your thinking or work.
thats the stuff!
Thank you very much.
Ok i'll get working on that.
ok i need some more help,
This is what i have done:
Mpq = y2-y1
_____
x2-x1
4-3
____
-3-(-8)
= 1/5
-----------------------
Mqr = y2-y1
_____
x2-x1
= -7 -3
______
-8(-8)
= - 11
____
-3
= 3.6
----------------------------
Mpq = y2-y1
_____
x2-x1
= -7-3
______
-6-(-8)
= -10
______
2
= -5
------------------------
Ok that's the gradents of all 3 sides,
How do i Form a Right angled triangle and name the right angle?
Thanks for the help!
Show that these three points , P(-8,3), Q(-3,4),R(-6,-7), Form a right angled triangle and name the right angle?
Look one line you have has a slope of -5, and another line has slope of 1/5.
They are at right angles...
So the right angle must be..the common point of those two lines. I don't follow your notation on the Mpq, but you can figure it from here.
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