2
A Circle has an infinite number of lines of symmetry.
a circle has an infinite amount of symmetrical lines. everywhere you put a line through a circle, it will be symmetrical.
Infinate.
Infinite
None.
2
None.
3
It has one line of symmetry
Yes.
No it would contain 180 lines of symmetry. Logically you would think that a circle has 360 lines of symmetry because it consists of 360 degrees, but if u were to do that each line of symmetery would occour twice (try to visualize this). Therefore a circle has 180 lines of symmetry.
Yes.
An ellipse has two lines of symmetry.
An irregular 7 sided heptagon normally has no lines of symmetry depending how it is constructed.
Yes.
If you take a circle for example, a line of symmetry is any line that can go through that circle and if you fold the circle in half it will be equal. So a line of symmetry is a line that you divide any shape in half with and have both halves be the same.