u define a circle by asking www.dictionary.reference.com
another name for a half circle is semi-circle
Half a circle is called a SEMI-CIRCLE
Half a circle is called a semi-circle. Sometimes it is called a half-moon.
a half circle? a half? semi circle? half sphere?
Half a circle is called a "semicircle" in geometry.
The circumference of a circle is the distance around it.
John Stith Pemberton
half of the radius the radius is half of the diameter the diameter is the with of the circle. This also can be called a quadrent circle.
semicircleA half circle is called a semicircle.Half a circle is a semi-circle
The center of a circle is the point from which all points on the circle are equidistant.