Classify the figures

Some of the common classification bases are as follows:

• No. of Sides: Figures can be classified depending on the no. of sides they have.
• Type of geometry: The figures may be classified as triangles, quadrilaterals, circles, etc.
• Dimension: You may classify the figures as 2-D or 3-D figures.
• Conjoined, enclosed, or overlapping: Some figures may be complex, consisting of conjoined shapes, smaller shapes enclosed within larger ones and/or partially or completely overlapping shapes, while others might be simple.

Illustration 7:

Group the given figures into 3 classes using each figure only once.

The given figures can be classified on the basis of the number of sides. Figures 1, 6 and 9 have 3 sides each; 3, 4 and 7 have 4 sides each; 2, 5 and 8 have 5 sides each.

Answer: 1, 6, 9| 3, 4, 7| 2, 5, 8.

Illustration 8:

Group the given figures into 3 classes using each figure only once.

• 1, 2 and 7 are simple figures.
• 3, 5 and 9 each have one shape enclosing another smaller shape.
• 4, 6 and 8 each have two shapes each that are touching each other.

Thus, the given figures can be classified as:

1, 2, 7| 3, 5, 9| 4, 6, 8.