#### MG 66 – PARTS OF CIRCLES

Children explain what a circle is, and how a pair of compasses constructs a circle.

They draw a radius on the circle and explain what a radius is.

They draw a diameter on the circle and explain what a diameter is.

Children explain the relationship between the length of the radius and the length of the diameter.

Children identify the circumference on the circle, and explain the relationship between the length of the diameter and the length of the circumference.

They construct a sector on the circle, and explain sectors that are semicircles and quadrants.