We review the properties of circles.

In the symmetry properties category, we have the following:

• Equal chords are  equidistant from the center;
• The perpendicular bisector of a chord passes through the center;
• Tangents from an external point are equal in length;
• The line joining an external point to the center bisects the angle between the tangents

In the category of angle properties, we have:

• Angle in a semicircle is a right angle;
• Angle between tangents and radius is a right angle;
• Angle at the center is twice the angle at the circumference;
• Angle in the same segment are equal;
• Angle in opposite segments are supplementary.

Homework:

Page 0, Page 1, Page 2, Page 3

#2, #4, #6, #8, #10, #12, #14, #16, #18