R S Aggarwal and Vikas Aggarwal Solutions for Chapter: Activity Sheet 72, Exercise 1: Exercise 1

Diameter of a circle is _____ times of the radius.

Each face of a cube is a _____shape.

A square has _____ lines of symmetry.

A circle has _____ lines of symmetry. ($2/4/$infinite)

A triangle with all sides equal has _____ lines of symmetry.

The sum of the sides of a rectilinear figure is called its _____ .

The perimeter of a square is _____ times the length of its side.

The perimeter of a rectangle $=2(\mathrm{length}+$_____).