Page 38 - SPARK OF MATH book 6

(3-3) Circles.

The center of a circle is a point that’s the same distance from any
point on the circle itself. This distance is called the radius of the circle.
A circle is named by the point in the center.

Any line segment from one point on the circle to another

point on the circle through the center is called a
diameter.

A radius is a line segment from the center of the Center
circle to the edge. Radius
Diameter

Example:
EXAMPLE:

A

Name of circle:
Radius of the circle: DA, DG, DS
Diameter of the circle:

Write the name of each circle, radius, and diameter.

Q A M
F

M
B A L
C D
R

G
F
N D B
Circle: Circle: Circle: Circle:

Radius: Radius: Radius: Radius:

Diameter: Diameter: Diameter: Diameter:

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