Two.
one
Two: a straight line and a curved line.
4 faces and 2 vertices.
semi
Semi means half. So there are two semicircles in a circle.
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