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Posted by **Twg** on Wednesday, August 19, 2009 at 9:13pm.

bisect each other at the point where they cross.

What generalization about

parallelograms ensures that the ironing board will

always be parallel to the floor, regardless of the height

of the board above the floor?

- GEOMETRY -
**Ms. Sue**, Wednesday, August 19, 2009 at 9:15pmWhat does "parallel" mean?

- GEOMETRY -
**Twg**, Wednesday, August 19, 2009 at 9:52pmlevel to doesn't it?

- GEOMETRY -
**Ms. Sue**, Wednesday, August 19, 2009 at 9:57pmA parallelogram has two sides that are the same distance apart. They are parallel -- like this:

____________________________________

____________________________________

Here's a site about parallelograms.

http://www.ies.co.jp/math/products/geo1/applets/para/para.html

I'm sure you'll be able to answer the question now. Please post your answer, and I'll be glad to check it.

- GEOMETRY -
**Twg**, Wednesday, August 19, 2009 at 10:07pmok, is it because the legs are the same size??

- GEOMETRY -
**Ms. Sue**, Wednesday, August 19, 2009 at 10:10pmYour question is: "What generalization about parallelograms ensures that the ironing board will always be parallel to the floor, regardless of the height

of the board above the floor?"

This part of the above site answer the question.

1. The opposite sides are equal in length.

. . .

3. The diagonals bisect each other.

- GEOMETRY -
**Twg**, Wednesday, August 19, 2009 at 10:19pmso the opposite legs are the same in length even though they cross each other. That's the answer?

- GEOMETRY -
**Ms. Sue**, Wednesday, August 19, 2009 at 10:22pmThe legs are diagonals of the parallelogram, and they bisect each other.

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