Angle Bisector Theorem

• JM = 5

• JM = 10

• JM = 12

• JM = 24

Find m∠KJL.

• 28

• 16

• 4

• 3

If DA is the perpendicular bisector or EI, then

• <IAD and <DAE are right angles

• DI=DE

• EA=IA

• All of the above

• AD = 12, BC = 5

• AD = 12, BC = 16

• AD = 5, BC = 12

• AD = 12, BC = 8

What is the missing statement in the proof?

• 2m∠ABD=m∠ABD+m∠ABD

• m∠ABD=m∠DBC

• m∠ABC=m∠ABC

• m∠ABD+m∠ABD=m∠ABD+m∠DBC

• A
• B
• C
• D

What is the missing statement in the proof?

• 2m∠ABD = m∠ABD + m∠ABD

• m∠ABD = m∠DBC

• m∠ABC = m∠ABC

• m∠ABD +m∠ABD = m∠ABD + m∠DBC

If DB bisects ∠ABC, then ∠ABD = ∠CBD.

• Definition of Congruent Angles

• Definition of Angle Bisector

• Angle Addition Postulate

• Definition of Right Angle

Determine the Conclusion.

• Then ∠BCA ≅ ∠DCA.

• Then ∠BAC ≅ ∠DAC.

• Then Segment AB is congruent to Segment AD.

• Then ∠BAC and ∠DAC are right angles.

If DA bisects IE, then

• ID=ED

• IA=EA

• <IDA=<EDA

• <IAD and <EAD are right angles