A shape does NOT need to have line symmetry in order to have rotational symmetry.
For example, the letters N, Z and S can be rotated 180° to show symmetry, but none of these show line symmetry.
When the folded part Line of Symmetry. Here I have folded a rectangle one way, and it didn't work.
A line has 180 degrees rotational symmetry.
Line symmetry.
Yes
You cannot have one parallel line. There must be another line that it is parallel to. Also, 1 symmetry is meaningless - you can have one axis of symmetry or rotational symmetry of order one. The answer will depend on which one it is.
A nonrectangular parallelogram has rotational symmetry, but not line symmetry. Additionally, shapes such as the letters S, N, and Z can be rotated to show rotational symmetry, although they do not have line symmetry.
Yes. Any equilateral shape can have both rotational and line symmetry.
A semicircle.
circle
A line segment would have rotational symmetry.
Yes, it is possible to have a shape that has a line of symmetry but does not have rotational symmetry. An example is the letter "K", which has a vertical line of symmetry but cannot be rotated to match its original orientation.
The letters S, N, Z, for example.
A triangle........I think
How about an isosceles trapezoid
Parrallelogram (it has rotational symmetry but no lines of symmetry)
The letters H and Z have both line symmetry and rotational symmetry
An arrowhead shape has one line of rotational symmetry. This line runs vertically down the center, allowing the shape to be rotated 180 degrees to look the same. It does not have any other lines of symmetry.
It has line symmetry (straight down the center) but not rotational symmetry.