Just the one and it is its radius when at right angles to the semi-circle's centre
None, however the semicircle has one folding axis of symmetry perpendicular to the midpoint of the straight side
The semi circle is a shape which has 1 line of symmetry 1straight side 0 equal length sides 0 parallel sides 2 vertices 0 diagnals
Semi means half. So there are two semicircles in a circle.
A triangle with only two of its sides equal. Also a semi-circle or any incomplete circle.
a semi-circle only has one line of symmetry
a semi-circle only has one line of symmetry
If "cimmey" is meant to be "semi" then the answer is 1. If not, I am sorry, I have no idea.
None.
Just the one and it is its radius when at right angles to the semi-circle's centre
one
a semi - circle has zero parallel lines
about its radius
None.
None, however the semicircle has one folding axis of symmetry perpendicular to the midpoint of the straight side
If the central point of the straight line is placed exactly on the middle, and such central point has an axis, it will have a rotational symmetry.
The semi circle is a shape which has 1 line of symmetry 1straight side 0 equal length sides 0 parallel sides 2 vertices 0 diagnals