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 figure that has rotational symmetry but not line symmetry is a figure that can be rotated by a certain angle and still look the same, but cannot be reflected across a line to create a mirror image of itself. An example of such a figure is a regular pentagon, which has rotational symmetry of 72 degrees but does not have any lines of symmetry. This means that if you rotate a regular pentagon by 72 degrees, it will look the same, but you cannot reflect it across any line to create a mirror image.
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
It has line symmetry (straight down the center) but not 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.