Half a circle is called a "semicircle" in geometry.
half a circle
The radius of a circle is half of its diameter
a hemisphere
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
In geometry it is called the "Great Circle".
Great Circle
Semi = half
Half the diameter of a circle is called its radius.
A semi-circle
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.
in geometry how is a circle different from an oval?
Euclid discovered the circle and he named his geometry "Euclidean geometry "