Question

the vertices of triangle ABC are A (1,5) B (5,3) C(1,1)
Prove by coordinate geometry that triangle ABC is an isosceles triangle.

Answer 1

USE DISTANCE FORMULAE
AB=SQRT(20)
BC= SQRT(20)
THUS IT IS ISOSCELES

Answer 2

Use distance formula to show two sides the same length.

Answer 3

ok, how do i plot it on a graph though?

Answer 4

there is a graph there, but i don't know how to plot it?

Answer 5

SIMPLY PLOT THE POINTS IT WILL COME UP

Answer 6

ok i will

Answer 7

so you do square root of 4^2 + 7^2 for AB and square root of 6^2 and 4^2 for BC?