Square
a square it has four equal sides and four equal angles 90-degree angles, or 100-radian angles or right angles.
Example: A rhombus is a flat shape with 4 equal straight sides.
Rectangle
Rectangle its had two sides meet at right angles. Does, a rectangle has 4 angles, each measuring 90 ̊. The opposite sides of a rectangle have the same lengths and are parallel.
Parallelogram
A parallelogram is a quadrilateral with opposite sides parallel and therefore opposite angles equal. A quadrilateral with equal sides is called a rhombus, and a parallelogram whose angles are all right angles is called a rectangle.
Rhombus
A Rhombus is a flat shape with 4 equal straight sides. A rhombus looks like a diamond. All sides have equal length. Opposite sides are parallel, and opposite angles are equal (it is a Parallelogram). The altitude is the distance at right angles to two sides.






