Click the link above and take detailed notes on the reading. Pay special attention to the paragraphs under the interactive applet which explain the rationale for the formula. You may ignore the section marked Parametric Form.
2. http://www.mathopenref.com/coordgeneralcircle.html
What if the center of the circle is not at the origin? This is the most important section to study as it connects back to what you learned in algebra about graphing a parabola by finding its vertex (h,k).
a. Take notes on the section
b. Make sure you can "decode" a circle equation to find its center and radius.
c. Try 4 different trials of "Things to try" at the bottom of the page.
3. http://www.studyisland.com
Go to Study Island, log in, click My Classes, then Honors Geometry (Mohyuddin) from the dropdown box. Complete to at least 70% passing the section on Circles.
4. Ask Mr. M for the take home test, which is optional and potentially extra credit for Honors students.