Construction Of A Circle

 

We will discuss about constructing a circle when radius is known. Consider the following example.

Construct a circle with radius 4 cm.

Step 1 : Measure the compass for  4 cm on a scale.

Step 2 : Mark a point in the sheet and name it O to be the center of the circle.

Step 3 : Place the pointer of the compass on O.

Step 4 : Complete the circle by turning the compass with the pointer fixed on O.