That will depend on what type of triangle it is because an equilateral triangle has 3 lines of symmetry whereas an isosceles triangle has only 1 line of symmetry and other triangles have no lines of symmetry.
square
3 Lines of symmetry
2 lines of symmetry
A nephroid has 2 lines of symmetry.
A parallelagram can be a square, which has four lines of symmetry or a rectangle which has two lines of symmetry but the generic parallelagram has zero lines of symmetry
square
3 Lines of symmetry
2 lines of symmetry
Equilateral Triangles (3 lines of symmetry)Rectangles (at least 2 lines of symmetry)Squares (4 lines of symmetry)Rhombuses (at least 2 lines of symmetry)Any regular polygon (at least 5 lines of symmetry)
A nephroid has 2 lines of symmetry.
it has five lines of symmetry
A parallelagram can be a square, which has four lines of symmetry or a rectangle which has two lines of symmetry but the generic parallelagram has zero lines of symmetry
it has no lines of symmetry
Yes, it is possible for an octagon to have 2 lines of symmetry, but it would not be a regular octagon. A regular octagon has 8 lines of symmetry. However, an irregular octagon can be designed with only 2 lines of symmetry if it is asymmetric in a specific way, such as having two opposite sides that mirror each other while the other sides differ in shape or length.
There is no such thing as 8 lines of symmetry. A circle, for example, has infinitely many lines of symmetry.
A decagon need not have any lines of symmetry. It can also have 1 or 10 lines of symmetry.
5 lines