posted by .

show that the triangle with verticies A(8,5) B(1,-2) C(-3,2) is a right triangle, and find its area.

the answer to the area is : 28.
please show me how to show its a right triangle, thanks!

  • math -

    compute the side lengths.
    You know that if the sides obey a^2 + b^2 = c^2, it is a right triangle!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math...Geometry

    Hello, Can someone please tell me if I worked this out correct and ended with the right answer?
  2. math URGENT!!!!

    the midpoints of the sides of a triangle are (1,1),(4,3),and (3,5). find the area of the triangle. please answer and show how u did it step by step please!!!! how do i find area of the smaller triangle?
  3. math

    B . . . . . . . . . . . . . . C A Triangle ABC is right angled at A. The area of triangle is = ½bh. The area of the triangle is 3/2x^2 + 10x + 16cm^2 where x is a positive integer. The area of the triangle ABC can be written in the …
  4. Area of a triangle i need help urgently

    in triangle ABC b=6 c=8 and angle A=60degree find the area of a triangle.let AD be the bisector of A where D lies on BC and AD=K?
  5. Area of a triangle

    In Triangle ABC b=6cm c=8cm and angle A=60 find the area of a triangle.let AD be the bisector of A where D lies on BC and AD=K show that AD=24root3/7
  6. Geometry

    The coordinates of a triangle are X(0,0, Y(2h,2h), and Z(4h,0). Is the triangle a right triangle?
  7. MATH Please help!

    A right triangle has an area of 13^2. The dimensions of the triangle are increased by a scale factor of three. What is the area of the new triangle?
  8. MATH HELP!!

    Consider the three points A(2,3,1) B(1,-2,3) C(7,4,6) a) Show that ABC is a right triangle. b) Calculate the area of this triangle. c) Find the coordinates of the center of the circle circumscribed about triangle ABC
  9. Math geometry

    1) The base angles of an isosceles triangle are (50-x)^6 and (30x-12)^6 what is the vertex angle?
  10. math 6th grade(G/T)so im in (8th)

    A right triangle is shown below. 229x162 The triangle is dilated by a scale factor of 2.5 to create a new triangle. What is the perimeter of the new triangle?

More Similar Questions