It has two lines of symmetry, one each perpendicular to each other passing thru the center of the rectangle
16 * * * * * Not sure what a rectangular octagon is but no kind of octagon has more than 8 lines of symmetry.
4
2
4
Eight
6
an isosceles has only 1 line of symmetry
one. It is a vertical line of symmetry which splits the A in half.
just one
only 1
First of all to correct your spelling. It is 'parallelogram'. A parallelogram does NOT have any lines of symmetry, unless it is a rectangular paralleligram. Where upon it has two lines of symmetry, viz/ a vertical line through the centre and an horizontal line through the centre.
Normally none but if it's an isosceles trapezoid it has one