7-7, Circumference and Area of a Circle (8.G.1, 8.G.2, and 8.G.3)
The circumference of a circle is the distance around it.
A chord is a segment with endpoints on the circle.
A radius is a segment that has one endpoint at the center and the other endpoint on the circle.
A diameter is a chord that passes through the center of the circle.
A chord is a segment with endpoints on the circle.
A radius is a segment that has one endpoint at the center and the other endpoint on the circle.
A diameter is a chord that passes through the center of the circle.
The Circle Song (1:35)
Area and Circumference of a Circle (4:20)