Conic Sections: Circles

think icon Think & Click: Symmetry of a Circle

Now, you try. Complete the Think & Click activity by looking at each problem below, thinking about it, and then clicking on the question to reveal the solution.

What is the point of symmetry for the following circle?

The center of the circle is its point of symmetry. (-2, 2)
 

circle through the points (0, 2), (negative 2, 4), (negative 4, 2) and (negative 2, 0)