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Angle Bisector

Angle Bisector. Section 1.6c. Warm Up. Solve each equation: 3x – 4 = 2x + 40 4x – 25 = 2(3x + 20). Angle Bisector Construction. An angle bisector is a ray that divides an angle into two congruent angles. JK bisects  LJM ; thus  LJK   KJM.

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Angle Bisector

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  1. Angle Bisector Section 1.6c

  2. Warm Up • Solve each equation: • 3x – 4 = 2x + 40 • 4x – 25 = 2(3x + 20)

  3. Angle Bisector Construction

  4. An angle bisector is a ray that divides an angle into two congruent angles. JK bisects LJM; thus LJKKJM.

  5. JK bisects LJM, mLJK = (-10x + 3)°, and mKJM = (–x + 21)°. Find mLJM.

  6. BD bisects ABC, mABD = , and • mDBC = (y + 4)°. Find mABC.

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