Circles

 A circle is a round shaped figure that has no corners or edges. 

In geometry, a circle can be defined as a closed, two-dimensional curved shape.

 few things around us that are circular in shape are a car tire, a wall clock that tells time, and a lollipop. 

 

Center of a Circle

The center of a circle is the center point in a circle from which all the distances to the points on the circle are equal. This distance is called the radius of the circle.

Here, point P is the center of the circle.

 

Semicircle:

A semi-circle is half of a circle, formed by cutting a whole circle along a line segment passing through the center of the circle. This line segment is called the diameter of the circle.

 

Quarter Circle:

A quarter circle is a quarter of a circle, formed by splitting a circle into 4 equal parts or a semicircle into 2 equal parts. 

A quarter circle is also called a quadrant. 

quarter circle is also called a quadrant. 

Fun Facts A straight line is a circle with an infinite area. A circle can have infinite lines of symmetry. The word ‘encyclopedia’ literally means ‘the circle of learning’. A circle can be divided equally irrespective of its size.