It is exactly like when the moon looks like when it is half full.
The diameter is the distance across the circle. So if you split the circle in half by drawing a line through it, the diameter would be the length of that line.
s diameter of the circle in the drawing above is the segment
Bresham's Mid point circle drawing algorithm.
another name for a half circle is semi-circle
circle(radius)
To draw a hemisphere, start by drawing a circle. Then, draw a curved line cutting the circle in half vertically. This line represents the hemisphere's cut surface. Finally, shade one half of the circle to show the curved surface of the hemisphere.
Coca cola
a hemisphere
Half a circle is called a semi-circle. Sometimes it is called a half-moon.
John Stith Pemberton
a half circle? a half? semi circle? half sphere?
Half a circle is called a "semicircle" in geometry.