# Homework Help: Circle geometry notation

1. May 12, 2006

### danago

Hey. When doing circle geometry, is there any designated notation i should use? For example, on a circle, is there any special notation for a minor arc, or a major arc? or a minor sector, or a major sector?

Thanks. It would just help me clear up my working out in problems.

2. May 12, 2006

### eax

Nope, atleast not to my knowledge. Just label it, and sometimes it would obvious what is what with respect to the question but NOT alway's. And usually when solving things with circles it is not neccessary to say its a major/minor arc.

3. May 13, 2006

### danago

ok thanks.

4. Nov 17, 2009

### jpollastro

There is specific notation between a major and minor arc..

major arcs are notated with 3 letters and minor ones, just with 2 letters.

Major arc
- an arc whose endpoints form an angle over 180 degrees with the center of the circle; written - the extra letter is used to distinguish it from a minor arc; ABD

Minor arc
- an arc whose endpoints form an angle less than 180 degrees with the center of the circle; written AB with the curve line above it..

see the website: http://library.thinkquest.org/2647/geometry/glossary.htm#major for the notations..

Last edited by a moderator: Apr 24, 2017
5. Nov 18, 2009

### danago

Wow, been over three years since i posted this. How did you come across this thread?

Thanks for replying anyway i guess haha