Arc length is a fraction of circumference. Area of a sector is a fractions of the area of a circle. Both can be calculated using the angle at the centre and the diameter or radius. Practice circle ...

Geometry: Circles and Polygons covers the specifics of geometry involving circles and polygons with any number of sides. The class includes a discussion on the internal angles of a circle as well as ...

Our world is filled with shapes and symbols that form familiar elements. One of those common geometric symbols is the circle. The circle plays a pivotal role in everyday life as tires on the cars we ...