Online College Courses for Credit

Equation of circle

Equation of circle

Author: Marcia Cyr

Students develop the equation of a circle from Pythagorean theorem then use it to plot center and radius od a circle. Students also decode the equation to identify the radius and center coordinates

See More

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to many different colleges and universities.*

Begin Free Trial
No credit card required

29 Sophia partners guarantee credit transfer.

311 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 27 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


Equation of Circles Notes


Video Notes on Equation of Circles

Go to and watch video on Equation of Circles