October 20
CONCEPT OF A CIRCLE
CONCEPT OF A CIRCLE
What is a circle?
A circle is the locus of points equidistant from a fixed Point.
The point is called centre of the circle.
Circle is among the classes of plane shape
With a regular shape.
A circle have atleast seven (7) properties which are listed below
✓ Diameter
✓ Radius
✓ centre
✓ chord
✓ sector
✓segment
✓circumference
The calculation surrounding circle are
✓The perimeter of a circle.
√ The Area of a circle
√ The radius of a circle
✓ The diameter of a circle
✓ The chord of a circle
✓ The circumference of a circle
HOW TO CALCULATE THE PERIMETER OF A CIRCLE.
Example 1: Find the perimeter of a circle with radius 4cm