A paraboloid is one possible answer.
No, it is 1 dimensional.
sausage
A circle. It has infinitely many.
A line is the only 1-dimensional figure, but only while it's a straight line. As soon as it turns or bends, it's then 2-dimensional.
If a figure has line symmetry about the y-axis, then for every point (x, y) on the figure, there is a corresponding point (-x, y). Given that one vertex is at (-1, -3), its symmetric counterpart across the y-axis would be at (1, -3). Thus, the coordinates of another vertex of the figure are (1, -3).
No, it is 1 dimensional.
sausage
It is (-1, 3).
A circle. It has infinitely many.
2
Square Pyramid
A line is the only 1-dimensional figure, but only while it's a straight line. As soon as it turns or bends, it's then 2-dimensional.
It has 1 line of symmetry
A house has 1 line of symmetry.
It has 1 vertical line of symmetry
A line has only 1 line of symmetry that i know of.
A cardioid has 1 line of symmetry.