Day 1: 4-9 CW - Unit 4 Test Practice

When do you use "CPCTC in a proof?

• ALWAYS at the beginning
• ALWAYS at the end
• It's optional
• Never

Complete the congruence statement.

• CRP
• PCR
• RPC
• PRC

Name the corresponding angle or side.

• A
• B
• C
• D

Identify a common side

• JK

• MJ

• LK

The red (ΔKNM) and blue (ΔPLM) triangles are congruent. Identify a common angle.

• Angle M

• Angle P

• Angle K

• Angle MLP

Determine the Conclusion.

• Then ∠BCA ≅ ∠DCA.
• Then ∠BAC ≅ ∠DAC.
• Then Segment AB is congruent to Segment AD.
• Then ∠BAC and ∠DAC are right angles.

Name the theorem or postulate that lets you immediately conclude ∆ABD ≅ ∆CBD.

• SAS

• AAS

• ASA

• H-L

• none of these

If DA bisects IE, then

• ID=ED
• IA=EA
• <IDA=<EDA
• <IAD and <EAD are right angles

What missing piece of information is needed to prove the triangles congruent using SAS?

• ∠F≅∠Q
• ∠G≅∠R
• ∠H≅∠S
• FH = QS

What is reason #2?

• Vertical angles are congruent.
• Consecutive angles are congruent.
• Alternate interior angles are congruent.
• Definition of an Angle Bisector