1. Circle By: Nasser Alkaabi

2. Definition of a Circle What is a Circle? Circles are simple closed shape which divided into two semi circles. A circle is a dimensional shape. It is the set if all point’s which are constant distance from a fixed point.

3. Definition of a circumference. What is a circumference. A circumference is a perimeter of a circle The distance around the edge of a circle (or any curvy shape) The distance around the edge of a circle (or any curvy shape) The circumference is the distance around a closed curve. The circumference of a circle can be calculated from its diameter using the formula: C = pi times d Or, substituting the diameter for the radius: C = 2 r times pi

4. Definition of a Chord What is a Chord? A chord is a line segment which join any point of a circle. A chord is a line segment that join’s two points on a curve, a chord is often used to describe a line segment joining two end points that lie on a circle.

5. Definition of a Segment What is a Segment? A segment is The portion of a line between any two points on the line. The area bounded by a chord and the arc of a curve subtended by the chord. The area bounded by a chord and the arc of a curve subtended by the chord.

6. Definition of a Diameter What is a Diameter? A Diameter is a straight line which passes the centre and has end points of a circle. a diameter of a circle is any straight line segment that passes through the centre of the circle and who’s endpoint’s are on the circle.

7. Definition of a Radius What is a Radius? A radius is a straight line from the centre and has an end point.

8. Definition of a Arc What is a Arc? An arc is a part of a circle that joins any two different point of a circle.