1. DON’T FORGET TO TAKE QUIA QUIZ CIRCLES DAY 4!!
Geometry/Trig Name: __________________________
Unit 8 GSP Circles Lab Date: ___________________________
Circles Day 4 – Section 9.6
Case 1 – Two Secants
Case 2 – Two Tangents
Case 3 – A Secant & A Tangent
Conclusion (Theorem 9-10): The measure of an angle formed by two secants, two tangents or a secant & a tangent is equal to _________ the measure of the ______________ of the ___________ arcs.
Example 1:
B is a point of tangency.
Example 2:
B and C are points of tangency. A C B D
mÐCAB = 20
mDB = 115
mBC = 116 A C D B
mCB = _________
mCD = _________
mBDC = ________
mÐCAB = _______
mCDB = ________
mBCD = ________
DON’T FORGET TO TAKE QUIA QUIZ CIRCLES DAY 4!!