An irregular shape that can be split into familiar shapes such as rectangles, triangles, and circles is called a figure.

A Composite figure

Step-by-step explanation:

An irregular shape that can be split into familiar shapes such as rectangle, triangles and circles is called a Composite figure.

A Composite figure may easily split into the familiar shapes such as triangles, rectangles and circles in order to find the area of these shapes.

Thus, area of such figures can be easily found out by a composite figure.