Posted by **Aimee** on Sunday, February 10, 2008 at 11:41am.

A is the point (1,2), B is (7,4) and C is (5,6). Calculate the length of each side of the triangle ABC.

- math -
**Guido**, Sunday, February 10, 2008 at 1:32pm
Use the distance formula for finding points on the xy-plane.

Let d = distance.

d = sqrt{(x2 - x1)^2 + (y2 - y1)^2}

You must apply the above formula to find the distance between points A and B, B and C and A and C.

So, you must apply the distance formula 3 times.

Got it?

If not, write back.

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