Circle Geometry: Perpendicular Bisector/ Centre

Friday's class was homework correction and exam review. On Monday I was out, and the substitute went over more review.

Today, we used paper folding to show the following two statements:

The perpendicular bisector of a chord passes through the center of a chord.
A line connected to the center of the circle and the midpoint of a chord is perpendicular to the chord.

These statements are essentially converses of each other, and we rewrote them using "iff".

We also looked at applying the slope, midpoint, and distance formulas to circles and chords.

Homework 1st period: p.211 #13,15,17,19,20 (completed and corrected in class)
Homework 2nd period: p.231 #31,35