Terms and Definitions related to circle.pptx

This topic is all about circle. the terms and definitions of related to circle.

1. CIRCLE A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the center . Equivalently, it is the curve traced out by a point that moves in a plane so that its distance from a given point is constant.

2. CIRCLE states a shape that consists of points, in a two-dimensional plane, equidistant from a given point. A circle is a closed curve that has no corners or vertices.

3. CIRCLE A

4. Terms Related to Circle

5. DIAMETER is the length of the line through the center that touches two points on the circumference of the circle.

6. DIAMETER C B A

7. RADIUS Radius of a circle is the distance from the center of the circle to any point on it’s circumference. It is usually denoted by ‘ R ’ or ‘ r ’.

8. RADIUS C B A

9. CHORD A chord is a segment which endpoints are on a given circle.

10. CHORD C B A D E

11. ARCS Arc is a part of a circumference of a circle. It is named by their endpoints and can be read clockwise or counter-clockwise. The symbol for arc is

12. ARCS C B A D E

13. TYPES OF ARCS

14. SEMICIRCLE An arc with a measure equal to one-half of the circumference of a circle. It measures 180 o . It is named using two or three endpoints of the arc.

15. SEMICIRCLE B D A C

16. MINOR ARC It is an arc of a circle that measures less than a semicircle or 180 o . It is named using two endpoints of the arc or three endpoints as long as it measures less than 180 o .

17. MINOR ARC B D A C

18. Major ARC It is an arc of a circle that measures greater than the semicircle . It measures greater than 180 o but less than 360 o .

19. MAJOR ARC B D A C

20. CENTRAL ANGLE A central angle is an angle whose vertex is at the center of the circle. The sides of the angle contain two radii of the circle.

21. CENTRAL ANGLE B D A C

22. INSCRIBED ANGLE Inscribed angle is an angle whose vertex is on the circle and whose sides contain chords of the circle.

23. INSCRIBED ANGLE B D E C

24. INTERCEPTED ARC Intercepted arc is the arc that lies in the interior of an angle and has endpoints on the angle.

25. INTERCEPTED ARC B D A C E

26. THEOREMS ON CIRCLE

27. ARCS Arc is a part of a circumference of a circle. It is named by their endpoints and can be read clockwise or counter-clockwise. The symbol for arc is

28. CHORD A chord is a segment which endpoints are on a given circle.

29. INSCRIBED ANGLE Inscribed angle is an angle whose vertex is on the circle and whose sides contain chords of the circle.

30. INSCRIBED ANGLE B D E C

31. INTERCEPTED ARC Intercepted arc is the arc that lies in the interior of an angle and has endpoints on the angle.

32. INTERCEPTED ARC B D A C E