## Circle

A circle is a set of points equidistant from a fixed point in a plane. The fixed point is called the center of the center and the fixed distance is called as the radius.

## Radius

The radius is also the segment joining the center and any point on the circle.

## Chord

A chord is a segment that joins any two points on the circle.

## Diameter

A diameter is the chord which passes through the center point of the circle.

#### Types of arc

1) Minor Acr

2) Major Acr

3) Semicircular Arc

a) Measure of a circle is 360°.

b) Measure of a semicircle is 180°.

c) Measure of a minor arc is less than 180°.

d) Measure of a major arc is more than 180°.

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Seg OD is the __radius __of the circle.

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Seg AB is the __diameter __of the circle.

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Seg PQ is a __chord __of the circle.

**Property No 1:**The perpendicular drawn from the center

of a circle to its chord bisects the chord

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