## bethjewell1996 Group Title Can anyone on help me with this?! Find the lengths of the diagonals of this trapezoid. one year ago one year ago

1. bethjewell1996 Group Title

2. just.chris Group Title

sorry for the slow reply I may follow up with a sketch. But to solve for a diagonal make it a rectangle. Drop a line perpendicular to the x axis from point (b, c) then the length of one side of the rectangle is "a" (from the minus side) plus "b" from the positive side. The other side of the right angle is c. Then just apply the Pythagorean theorem to get the diagonal from (-a, 0) to (b, c). Let me know if you need me to sketch it out.

3. bethjewell1996 Group Title

This is where im really bad at math Im still lost

4. just.chris Group Title

I'll try a drawing. Hang on.

5. just.chris Group Title

|dw:1355853842741:dw| Let's find this diagonal.

6. just.chris Group Title

|dw:1355854027556:dw| Is this enough? Now just apply the Pythagorean theorem using (a + b) as one side, c as the other and the diagonal as the hypotenuse.

7. just.chris Group Title

OK?

8. bethjewell1996 Group Title

Now I get it thank you :)

9. just.chris Group Title

You're welcome.