SOLUTION: show that (-3, 1), (3, -1) and (1, 3) are the vertices of an isosceles triangle. find its area
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Question 885497: show that (-3, 1), (3, -1) and (1, 3) are the vertices of an isosceles triangle. find its area
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
A(-3, 1), B(3, -1) and C(1, 3)
any two sides must be equal
Find AB, BC,CA
L(AB) =
Distance between two points
x1 y1 x2 y2
-3 1 3 -1
d=
d=
d=
d=
d= 6.32
L(BC)
Distance between two points
x1 y1 x2 y2
3 -1 1 3
d=
d=
d=
d=
d= 4.47
l(CA)
Distance between two points
x1 y1 x2 y2
-3 1 1 3
d=
d=
d=
d=
d= 4.47
CA=BC
so it is an isosceles triangle
m.ananth@hotmail.ca
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