Pennyaline wrote:

> Listen Julie, the diameter of a circle is its full width across--the
> length of a straight line running between two points that bisects the
> center and creates two equal 180 degree arcs. The distance around the
> outside of a circle is its circumference.

Nice use of 4th-grade terminology.

For julie: A "straight line" is like a piece of string pulled tight.
"Bisect" means to cut in two pieces of the same size. The "center" is
the middle. "180 degrees" means halfway around a circle, like from 12
o'clock to 6 o'clock on a round clock. (A clock is a device we use to
keep track of time.) An "arc" is a curve, like in the road or around
the edge of a baseball. Don't even worry about "circumference".

You're welcome.