3355
Two of them
Just the one and it is its radius when at right angles to the semi-circle's centre
semi-circle
A semi-circle the answere is semi-circle or a breve
A semi-circle is a two dimensional shape.
A semi-circle is a 180 degree half circle. A semi-circle does not have any corners. A circle does not have corners either. There are points of beginning and end in a semi-circle. In a circle the point of beginning is the same as the ending point.
a semi-circle only has one line of symmetry
a semi-circle only has one line of symmetry
a semi - circle has zero parallel lines
Circle. That is the opposite of semi circle.
A semi-circle
180
Two.
3355
Two of them
two