Circle:
Every point on a circle is equidistance from some
fixed point, which is the center. A circle is divided
into 360 degrees. Only one circle can pass through
three points not in a straight line.
Chord:
A length of line or segment connecting two points on a
circle.
Diameter:
Length of line (chord) passing through the center of a
circle
Radius:
A line Segment connecting the center of a circle to
any point on the circle. The dimension is half that of
a diameter.
Tangent:
A line which has only one point touching the circle. A
tangent is always perpendicular to the radius.
Arc:
Is part of a circle.
Pi:
The ratio of the diameter of a circle to its cir-
cumference. The symbol for Pi is . Pi=(3.141592654)
Circumference:
The distance around a circle (the perimeter). The cir-
cumference = diameter x
Area:
x Radius
2
http://www.dvcplanners.com
Every point on a circle is equidistance from some
fixed point, which is the center. A circle is divided
into 360 degrees. Only one circle can pass through
three points not in a straight line.
Chord:
A length of line or segment connecting two points on a
circle.
Diameter:
Length of line (chord) passing through the center of a
circle
Radius:
A line Segment connecting the center of a circle to
any point on the circle. The dimension is half that of
a diameter.
Tangent:
A line which has only one point touching the circle. A
tangent is always perpendicular to the radius.
Arc:
Is part of a circle.
Pi:
The ratio of the diameter of a circle to its cir-
cumference. The symbol for Pi is . Pi=(3.141592654)
Circumference:
The distance around a circle (the perimeter). The cir-
cumference = diameter x
Area:
x Radius
2
http://www.dvcplanners.com
CIRCLES
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