Question

Show that the triangle with vertices A(0,4),B(-4,-2), and C(4,-2) is isosceles.
Plzzz help me? :)

Answer 1

Ok, this is actually pretty easy. First, draw a grid, like so (except please draw it better than that one):



Then, plot your points on the grid, like this:



Now, draw the lines and connect them.

Now, we know that B is at (-4,-2) and that C is at (4,-2). How far apart are B and C?

Answer 2

or you could just calculate all three distances between these points.
if triangle is isosceles out of tree two distances would be equal.

Answer 3

Which is basically the next step. I was just putting it in a grid form for easy visualizing.

Answer 4

the formula is distance formula

Answer 5

ok

Answer 6

So, when you look at it, the triangle has these dimensions:



Now, if you need to find the length of a side, what do you do next?