A semi-circle
a hemisphere
Half a circle is called a "semicircle" in geometry.
Half a circle is called a semi-circle. Sometimes it is called a half-moon.
semicircleA half circle is called a semicircle.Half a circle is a semi-circle
Semi = half
The half circle American flags are called "half-staff flags."
Half the diameter of a circle is called its radius.
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.
A semi-circle
A semicircle
Half a circle is called a semicircle
A semi-circle the answere is semi-circle or a breve