Yes
There are no lines of symmetry; However, the lines opposite are parallel to each other
No.
No but a rectangle does have 2 lines of symmetry
A rectangle
two diagonals and with symetric center of two diagonals
Only two - parallel to and halfway between the sides. The diagonals are not lines of symmetry.
A heptagon can have 7 lines of symmetry but it need not have any. It will have 7*(7-3)/2 = 7*4/2 = 14 diagonals.
In geometry, certain shapes have diagonals that act as lines of symmetry. Specifically, regular polygons with an even number of sides, such as squares and hexagons, have diagonals that can serve as lines of symmetry. Additionally, rectangles and some other symmetrical quadrilaterals also exhibit this property. However, not all shapes have this characteristic; it is primarily found in shapes with specific symmetrical properties.
Most parallelograms do not have any lines of symmetry. The only parallelograms that can have lines of symmetry are squares, rectangles, and rhombuses.
Squares.
Two (the diagonals, from corner to opposite corner)
Yes. Some example of this are:Rectangles (at least 2 lines of symmetry)Squares (4 lines of symmetry)Rhombuses (at least 2 lines of symmetry)