A triangle has 3 lines of symmetry.
A square has four lines of symmetry!
A square.
A square or rectangle
parallelogram
A triangle has 3 lines of symmetry.
A square has four lines of symmetry!
A square has exactly four lines of symmetry.
A square.
A square or rectangle
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)
parallelogram
Rectangles and Rhombuses (if they are not also a square. Squares have 4 lines of symmetry.)
A square
Square, rectangle or and circle but an circle is not a polygon,
A rectangle (that is not also a square) or a rhombus (that is not also a square). Squares have 4 symmetry lines.
It depends on how many sides that it has and whether of not it is regular (all the lines of the polygon are of equal length if it is a regular polygon). For regular polygons, the number of symmetry lines is the number of sides if number of sides is an odd number. Otherwise, the number of symmetry lines is double the number of sides. A square has 4 sides and 8 symmetry lines; a triangle has 3 sides and 3 symmetry lines.