The document explains the concept of a circle, identifying it as a closed curve with a center point equidistant from all points on the boundary. Key parts discussed include the radius, diameter, chord, arc, sector, and segment, with definitions and relationships between these components. The document outlines that a circle can have infinite radii and chords, with the diameter being the longest chord.

1. CIRCLE & ITS PARTS
BY
K. ASWINI
23-EDM-08

2. CIRCLE IN DAILY LIFE

3. WHAT IS A CIRCLE?
• A CIRCLE IS A CLOSED CURVE IN A PLANE.
A Circle can be drawn with the help of a
circular object.
For Eg. A circle drawn with the help of coin

4. Centre of a circle
• A circle is a closed curve consisting of all points in a
plane which are at the same distance from a fixed point
inside it.
•This fixed point inside a circle is
called Centre.
•A circle has one and only centre

5. Radius
• A line segment that joints
any point on the circle to
its centre its called a radius.
• Radius of a circle are equal
in length.
• Infinite number radius can
be drawn in a circle.

6. Diameter
• A line segment that joins any two
points on the circle and passes
through its centre is called a
diameter.
• Infinite number diameter can be
drawn in a circle.
• The Length of the diameter of the
circle is twice the length of its radius.

7. Chord
• A line segment that joins any two
points on a circle is called a chord.
• Diameter is also a chord of a circle.
• Diameter is the longest chord.
• Infinite number of chords can be
drawn in a circle.

8. ARC
• An arc is the distance between any two
points on the circumference of a circle.

9. Sector
• The plane surface that is enclosed
between two radii and the circular arc
of a circle is called a Sector.

10. SEGMENT
•Each part of a circle which is
divided by a chord is called a
segment.
•The part which has a smaller arc
is called as a minor segment.
•The part which has a larger arc
is called as a major segment.