Circles

The discoveries of fire and the circular wheel are two of the most important events in the history of the human race

Define circle, radius, chord, diameter, and arc.

A circle is the set of all points in a plane that lie a fixed distance from a point called its center

Questions (12)

Since early history, mathematicians have known that the ratio of the distance around a circle (the circumference) divided by the length of its diameter is approximately 3.

Questions (10)

Find the area of a circle

The area of a circle represents the total two-dimensional space enclosed within its curved boundary

Questions (10)