none really i mean there is only 1 and it is a trapezoid. That's the only one.
You could add an isosceles triangle.
Any polygon where the side to the left of the bottom is the same as the side to the right of the bottom, and the next pair of sides are the same as one another (but different from the first pair), and so on. The angles would have to be selected so that the left half of the shape is the mirror image of the right half. So that is an infinite number added to the "only one".
A truncated parabola.
An ellipse.
and there are loads more.
All regular shapes have a line of symmetry. But you can get rid of its line of symmetry by making it irregular (so the angles aren't the same).
Shapes do not always have lines of symmetry. For example, if you have an irregular shape, it will not have a line of symmetry. I am quite certain though that all geometric shapes have a line of symmetry.
No. Asymmetric shapes do not have any lines (or planes) of symmetry.
An isosceles triangle and an isosceles trapezoid are two of them.
Yes, they do exist. In fact, there are infinitely many of them.
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.
isoceles triangle
square
Many shapes have more than one line of symmetry. These include a rectangle, equilateral triangle, and a square. While a rectangle has two lines of symmetry, an equilateral triangle has three.
None.All shapes were at least 3 sides or more.
Symmetry is the line in the middle of any object to split it into two equal parts. some objects or shapes don't always have a 'line' of symmetry.
Triangle, square, circle.