Properties of Circles Flashcards

All 6 cards in this deck

What is the radius of a circle?

The distance from the centre to any point on the circumference.

What is the diameter of a circle?

A straight line from one side of the circle to the other, passing through the centre. It is twice the radius.

What is a chord of a circle?

A straight line joining two points on the circumference (it does not have to pass through the centre).

What is a tangent to a circle?

A straight line that touches the circle at exactly one point.

What is an arc of a circle?

A part of the circumference (a curved section of the edge).

True or false? A sector is the region between a chord and an arc.

False. That is a segment; a sector is the region between two radii and an arc.