2
A triangle
4 lines of symmety
infinite number of lines
A cylinder has an infinite number of lines of symmetry (because a circle has an infinite number of lines of symmetry).
Yes the lines within the Cartesian plane are infinite
A sphere has an infinite number of lines of symmetry
symmety is a thing
There is an infinite number of lines.
An infinite number.
A circle
A circle has an infinite number of lines of symmetry. Any chord of the circle that passes through its center will be line of symmetry. Since there is an infinite number of chords, there is an infinite number of lines of symmetry.