Check your brakes
a circle
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.
To construct an inscribed square within a circle, four lines will be drawn. These lines are the sides of the square, which connect the points where the square touches the circle. Additionally, if you include the lines from the center of the circle to the vertices of the square, you would draw four more lines, totaling eight lines. However, strictly for the square itself, only four lines are necessary.
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. :)
a semi - circle has zero parallel lines
0/infinite amount of sides infinite lines of symmetry 0 right angles
A circle or a sphere