Higher Maths

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.


whats is a quartile, and what does a quadratic sequence mean and do?


Do you know any websites that gives you step by step instructions on particular questions on trig and circles that you can't answer?


How do you slove word problems regarding slopes?

  1. 👍 0
  2. 👎 0
  3. 👁 227
  1. 10 * 10 / x * w*h/s is your answer.

    1. 👍 0
    2. 👎 0
  2. DABFFFFFFFFFFFFFF

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    Triangle ABC undergoes a series of transformations to result in triangle DEF. Is triangle DEF congruent to triangle ABC ? Is it Congruent or Not congruent? 1.)) Triangle ABC is translated 3 units up and 5 units right, and then

    asked by Brooklyn Squad on April 25, 2018
  2. Math ASAP HELP

    The following points are plotted on a coordinate plane:(-1,2),(-1,7), and (4,2). If the points are connected by straight lines, which shape will they form? A. an acute triangle***** B. a right triangle C. an obtuse triangle D. a

    asked by Jonah on May 25, 2018
  3. 8th Grade Pre-Algebra

    Triangle PQR is transformed to triangle P'Q'R'. Triangle PQR has vertices P(3, −6), Q(0, 9), and R(−3, 0). Triangle P'Q'R' has vertices P'(1, −2), Q'(0, 3), and R'(−1, 0). Plot triangles PQR and P'Q'R' on your own

    asked by Music Lover 14 on November 13, 2016
  4. maths-urgently needed

    In right angled triangle ABC angle B=90 degree and AB= root 34 unit. The coordinates of point B and Care (4,2)and (-1,y) respectively. If area of triangle ABC = 17 sq.units, then find value of y.

    asked by Anonymous on February 12, 2013
  5. Remy

    triangle AOB is a right angled triangle....(1.5, 2)is the midpoint co-ordinate of AB the co-ordinate of B is (2.5. 0)... Find the height of point A reached by the the top of the triangle... Could you show this step-by step please?

    asked by Maths URGENT on September 28, 2009
  1. Remy

    triangle AOB is a right angled triangle....(1.5, 2)is the midpoint co-ordinate of AB the co-ordinate of B is (2.5. 0)... Find the height of point A reached by the the top of the triangle... Could you show this step-by step please?

    asked by Maths URGENT on September 28, 2009
  2. math

    (please explain with brief explanation) The sides of an equilateral triangle are shortened by 12 units,13 units and 14 units respectively and a right angled triangle is formed.Find the side of the equilateral triangle.

    asked by Nithin on September 2, 2014
  3. math - trig/pythagoras

    A piece of flat pastry is cut in the shape of a right-angled triangle. The longest side is 6b cm and the shortest is 2b cm a) Find the length of the third side. b) Prove that the area of the triangle is equal to 4√2b^2 cm^2.

    asked by anonymous on January 15, 2018
  4. Math

    The area of a regular pentagon with a perimeter of 35 units. Join the centre to each vertex to form 5 eq Join the centre to each vertex to form 5 equal triangles. Consider one of those triangles the central angle is 72º and each

    asked by Kate on April 29, 2007
  5. Maths

    In A Right Angled Triangle,one Of The Acute Angles Is 20degree Greater Than The Other. Find The Angles Of The Triangle.

    asked by Blaze on November 15, 2016
  6. math please help

    There are two triangles one large and one small. Write an expression in simplest form for the perimeter of each triangle. Large triangle left side says 4x+2 top says 7x+7 bottom days 5x-4. Small triangle left side says x+3 top

    asked by stressed out over math on May 19, 2015

You can view more similar questions or ask a new question.