2.2 Angle Bisectors

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# 2.2 Angle Bisectors - PowerPoint PPT Presentation

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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## PowerPoint Slideshow about ' 2.2 Angle Bisectors' - trudy

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Presentation Transcript

### 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
• BD bisects ABD and ABD = 46˚
• Find m DBC and m ABC

A

D

46˚

B

C

Use Angle Bisectors

A

• DAB is bisected by __
• m DAB = __
• BCD is bisected by __
• m BCD = __

45˚

D

B

27˚

C

Use Algebra with Angle Measures
• RQ bisects PRS. Find x.
• m PRQ = m QRS

Q

(6x + 1)˚

P

85˚

R

S

Guided Practice
• Pg. 64 #1-7