Students will bring home their final exam papers. I have uploaded answers for the exam here.
Apart from going over some exam questions, 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:
#2, #4, #6, #8, #10, #12, #14, #16, #18
