Circles and Their Properties Quiz

Circle Definition

• A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre.
• The distance between any point of the circle and the centre is called the radius.

History and Applications

• The circle has been known since before the beginning of recorded history.
• Natural circles are common, such as the full moon or a slice of round fruit.
• The circle is the basis for the wheel, which, with related inventions such as gears, makes much of modern machinery possible.
• In mathematics, the study of the circle has helped inspire the development of geometry, astronomy, and calculus.

Terminology

• Annulus: a ring-shaped object, the region bounded by two concentric circles.
• Arc: any connected part of a circle.
• Centre: the point equidistant from all points on the circle.
• Chord: a line segment whose endpoints lie on the circle, thus dividing a circle into two segments.
• Circumference: the distance around the circle.

Test your knowledge about circles and their properties in this quiz. Explore the concept of radius, circumference, and the relationship between circles and other shapes.