Check your brakes
a circle
a semi - circle has zero parallel lines
They are straight lines, part s of which form chords of the circle.
No, all polygons have straight lines. All lines are straight
Polygons have sides made of line segments (straigh lines). There are no line segments in a circle.
A circle; a line; or a shape composed of connected lines that do not make a single closed path. Sometimes people say a circle is in fact a polygon with an infinite number of sides. But a closed shape with an infinite number of sides would have to be made of sides with a length of zero; such "sides" are points and not lines. A circle does not therefore meet the definition of a polygon.
A circle intersected by a pair of parallel lines.
A circle because if you have a shape with billions and billions of lines you will end up with a smooth line which is a circle.
It has two lines of symitry. Symitry is when you can fold something in half and you get the same shape in both sides. For exaple: in a circle you have the same shape if you fold it horizontally or vertically. :)
0/infinite amount of sides infinite lines of symmetry 0 right angles
A circle or a sphere
A circle has no sides