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Geom2.5.notebook January 14, 2014 Geometry Ch.2 Notes Page 5 P5 2­5 Proving Angles Congruent Jan 10­3:18 PM Jan 12­6:16 AM 1 Geom2.5.notebook January 14, 2014 Jan 13­3:06 PM Given: Proof. What do we know about 1 and 2? _______________________________ What do we know about 3 and 2? ________________________________ So now we can say _____________________ = ________________________ by substitution. What happens if we subtract 2 from both sides of the equation, what are we left with? ___________________________ What conclusion can we make? If two angles are _____________________ of the _______________ angle, then the two angles are ­­­­­­­­­­­­­­­­­____________________________. This is the ________________________________________________ Theorem. Jan 13­3:20 PM 2 Geom2.5.notebook January 14, 2014 Jan 12­6:19 AM Find the value of each variable and label each angle measure. Jan 12­6:16 AM 3 Geom2.5.notebook January 14, 2014 Jan 12­6:16 AM 5. Jan 12­6:18 AM 4 Geom2.5.notebook January 14, 2014 6. Jan 12­6:18 AM HW #5 2­5 P112 #1­6,12­15 Please put your name and class period at the top of the homework. Also include the homework number. Terms: Theorem Vertical Angles Theorem, Congruent Supplements Theorem, Congruent Complements Theorem Jan 10­3:18 PM 5