Rectilinear Shapes:

Shapes which are bounded by straight lines and connected to each other are called rectilinear shapes.Fig.11

Fig.11: Some rectilinear Shapes

Irregular Shapes:

Shapes which are bounded by regular and irregular lines like straight and curved and are not constructed mathematically are called irregular shapes (Fig.12)

Fig.12: Some Irregular Shapes

Hand-drawn Shapes:

Shapes which are created with unaided hand or freehand to create various irregular uneven shapes are called hand-drawn shapes . (Fig.13)

Fig.13: Some Hand-drawn Shapes