Question

4) What do you mean by regular objects?​

Answer 1

Answer:

The definition of a regular shape is that all the sides are equal and all the inside angles are equal. An irregular shape doesn't have equal sides or equal angles. For example, an equilateral triangle is a regular shape because all the sides are equal AND all the angles are equal.

Answer 2

A regular object has faces which are standard polygons such as square, triangle, parallelogram etc.

Other regular objects are often called prisms such as a bar with three rectangular faces and two triangular faces.