a.
The type of quadrilaterals in the figure are :
- rectangle ( AEGH,ABFE,CDFE,ABDC,BFGH)
- pllgm (CLEG,DKFE)
- Rhombus (LMNO)
- Trapezoid (CLFG,DKEL,CDKG)
b .
To differentiate between a quadrilateral and a parallelogram, we need to know the properties of a pllgm
- A parallelogram has all of it's opposite side parallel and equal.
- A parallelogram's opposite angles are equal.
- A parallelogram can be classified into three types : a rhombus, a square and a rectangle.
- A rectangle has 2 pairs of equal sides and it's each angle measures 90°
- A square is a rectangle with all the sides equal.
- A rhombus is a pllgm with all of it's sides equal and the diagonals form an angle of 90° .