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2.2 Angle Bisectors

2.2 Angle Bisectors. Definitions. Angle bisector – a ray that divides and angle into two congruent angles. D. C. A. B. Find Angle Measures. BD bisects ABC and m ABC = 110˚ Find m ABD and m DBC. A. D. 110˚. B. C. Find Angle Measures and Classify.

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2.2 Angle Bisectors

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  1. 2.2 Angle Bisectors

  2. Definitions • Angle bisector – a ray that divides and angle into two congruent angles D C A B

  3. Find Angle Measures • BD bisects ABC and m ABC = 110˚ • Find m ABD and m DBC A D 110˚ B C

  4. Find Angle Measures and Classify • BD bisects ABD and ABD = 46˚ • Find m DBC and m ABC A D 46˚ B C

  5. Use Angle Bisectors A • DAB is bisected by __ • m DAB = __ • BCD is bisected by __ • m BCD = __ 45˚ D B 27˚ C

  6. Use Algebra with Angle Measures • RQ bisects PRS. Find x. • m PRQ = m QRS Q (6x + 1)˚ P 85˚ R S

  7. Guided Practice • Pg. 64 #1-7

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