No. They cannot be similar because a parallelogram has two pairs of sides with equal length. A parallelogram cannot have more than one pair.
Yes all rectangles are parallelogram but all parallelogram cannot be rectangles.
A parallelogram can have adjacent sides and angles which are different. A square cannot.
No, a trapezoid cannot be be a parallelogram.
No, a parallelogram cannot be a trapezium.
No. They cannot be similar because a parallelogram has two pairs of sides with equal length. A parallelogram cannot have more than one pair.
square
Yes all rectangles are parallelogram but all parallelogram cannot be rectangles.
Concave is a property of [irregular] polygons. A parallelogram cannot be concave.
No, it cannot be. A dodecagon must have 12 sides (only) and 12 angles (only). A parallelogram has to have 4 sides (only) and 4 angles (only). Hence a dodecagon cannot be a parallelogram.
A parallelogram can have adjacent sides and angles which are different. A square cannot.
No, a trapezoid cannot be be a parallelogram.
No, a parallelogram cannot be a trapezium.
No. In fact a parallelogram does not add up. It has a perimeter, it has an area, it has four angles and they are or can be added up. The the parallelogram itself cannot.
a rhombus and a square. a square can be a parallelogram but a parallelogram cannot be a square. a rhombus cannot be a square but a square can be a rhombus. * * * * * A rhombus does not have any lines of symmetry, only a square has two.
A right angle.
A parallelogram cannot be generalised to a convex shape with an odd number of sides.