A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 4 years ago

Which undefined term is needed to define a circle? A. Point B. Radius C. Line D. Ray

  • This Question is Open
  1. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Hi everyone. I just started in my Geometry course and I'm just having a little difficulty with this question. It's just a simple worksheet, I understand everything else. It's just this one question is weird because I haven't worked with circles in a while and this fact is not anywhere in the lesson from what I can see. I'm starting to understand the concept of defined and undefined terms. However, I am not sure if "radius" is an undefined or defined term. I was going to choose "radius." Does anyone have any ideas? I mean, I know this is probably really simple stuff, but like I said, I just started.

  2. anonymous
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    OK so three points define a circle, so the answer would be A point. this is how: |dw:1334355538396:dw| So as you can see there are three points on the outside and and only one circle has all three points on it. They are always the same distance away from the center point. In fact any of these lines from the center point out are called radius. If you would like a slightly silly website for that go to: windowseat.ca/circles It is slightly corny cause it's called circles are awesome, but anyways click on learn about circles and it explains it all really well .Good luck with that worksheet!

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.