This document defines and describes various geometric shapes and terms related to circles. It explains that a circle is a closed curve where all points are equally distant from the center, and an arc is a portion of the circumference. It also defines concentric and eccentric circles, ellipses, radii, chords, diameters, sectors, segments, circumference, and quadrants.

1. CIRCLE

2. •Is a closed curve , all points are equally
distant from the center.
•An arc is a portion of the circumference of
the circle.

3. 1. Concentric circle
• consist of two or more circles with a
one center.

5. 2. Eccentric circles
•Are circles having no common center.

7. 3. Ellipse
•Is an oblique circle with two axes, the minor
axis and the major axis

9. 4. Radius
•Is a line segment from the center to any
point on the circle

11. 5. Chord
• is a line segment whose endpoints lie on
the circle.

13. 6.Diameter
•Is a chord that passes through the line

14. 7. Sector
•Is a portion of a circle bounded by two radii
and the intercepted arc.

16. 8. Segment
•Is a portion of a circle bounded by an arc and a
chord.

18. 9. Circumference
•Is the distance around the circle.
•The circumference is equal to the diameter
multiplied by 3.1416

20. 10. Quadrant
•Is one- fourth of the entire area of the circle.