Chapter+7

**Wednesday March 16th, Class Review**
==**Main topic: 1.Angle in a circle theorem:The measure of the central angle is twice the measure of the inscribed angle subtended by the same arc. 2. Corollary 1:Inscribed Angles subtended by the same arc of a circle equal. 3. Corollary 2:THe angle inscribed in a semicircle is a right angle.**==


 * ** Corollary: a proposition that is incidentally proved in proving another proposition **
 * ** Construction: additional lines drawn to prove **
 * ** Equidistant:equal distance **
 * ** Pythagoras: the longest line in a triangle. a^2+b^2=c^2 **
 * ** Congruent: when the 2 shapes are same with sss,sas,and asa reasons at the top. **
 * ** CPCTC: Corresponding parts of congruent triangles are congruent. **
 * ** Inscribed angle: the angle between two chords of a circle that have a common endpoint. **
 * ** Central angle: Angle with two endpoints on the circle.Circuference and a vertax located at the center of the circle. **
 * ** Perpendicular bisector: when one line bisects another line (cuts in half) at a 90 degree angle **
 * ** Chord: a line segment whose two end points line on a circle **
 * ** subtend:opposite of the arc. **


 * 1) ** The angle inscribed in a semicircle is a right angle. **
 * 2) ** Inscribed angles subtended by the same arc of a circle are equal. **
 * 3) ** The measure of the central angle is twice the measure of the inscribed angle subtended by the same arc. **


 * Monday March 8th, Class Review**

**Main Topic : Two Chord Theorem**
If two chords in a circle have the same length then they will be equidistant from the center of the circle.

Main Topic : Congruent
= Main Topic: Chord Bisector Theorem = Today we talked about 3 Chord properties 1. A line through the centre of a circle that bisects a chord is perpendicular to the chord 2. The perpendicular from the centre of a circle to a chord bisects the chord. 3. The perpendicular bisector of any chord contains the center of the circle.
 * 1) SSS Congruence Theorem: If 3 sides of one triangle are equal to 3 sides of another triangle, then triangles are congruent.
 * 2) SAS Congruence Theorem: If 2 sides and the contained angle of one triangle are equal to two sides and the contained angle of another triangle are equal, the triangles are congruent.
 * 3) ASA Congruence Theorem: If two angle and the contained side of a triangle are equal to two angle and the contained side of another triangle, the triangles are congruent.
 * Tuesday, Mar. 2nd, Class Review**