Question

a rectangle has How many lines of symmetry

Answer 1

two lines of symmetry

Answer 2

A rectangle has two lines of symmetry. One line of symmetry is the horizontal line and one is the vertical line.

Lines of symmetry are the invisible lines drawn in order to form a mirror image.  

It shows that if the shape is folded along the line, the two sides overlap each other.  

Thus, a rectangle has 2 lines of symmetry and if it is folded on those line it overlaps each other perfectly.