NEVER use SSA to prove triangles are congruent!. CPCTC Corresponding Parts of Congruent Triangles...
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Transcript of NEVER use SSA to prove triangles are congruent!. CPCTC Corresponding Parts of Congruent Triangles...
NEVER use SSA to prove triangles are
congruent!
CPCTCCorresponding Parts of Congruent Triangles are Congruent
SSS
Also, make flashcards for:
SAS, ASA, AAS, and HL
Lesson 4-4
• I can use triangle congruence postulates to prove that triangles are congruent
Given
Given TS ≅ TS∆RST ≅ ∆UTS Reflexive
SSS
Given
Given
US ≅ US∆RSU ≅ ∆TSU Reflexive SAS
∠RSU ≅ ∠TSU Def’n of angle bisector
Def’n of angle bisector
Given
Given
Given ∠ABD ≅ ∠CBD∆ABD ≅ ∆CBD ASA
Your turn!
Given
Given BD ≅ BD∆ABD ≅ ∆CBD Reflexive
SSS ∠A ≅ ∠C CPCTC
Given
Given DF ≅ DF∆EDF ≅ ∆GFD
Reflexive
AASCPCTC
∠EDF ≅ ∠GFD DG ≅ FE
AIA
Given
Given CB ≅ CB Reflexive ∆ABC ≅ ∆DBC HL ∠A ≅ ∠D CPCTC
∠ADB ≅ ∠CBD BD ≅ BD∆ABD ≅ ∆CDB
Given
Given
|| lines ↔ AIA ≅ Reflexive
SAS
∠DEG ≅ ∠FEG GE ≅ GE∆DEG ≅ ∆FEG DE ≅ FE
Given
GivenDef’n of angle bisector
Reflexive
ASACPCTC
Mickey Mouse
4-4 and 4-5
I got it!
I mostly get it
I need more helpI don’t get it at all!
#1 I can recognize SSS, SAS, ASA, AAS and HL postulates
#2 I can use triangle congruence postulates to prove that triangles are congruent #1
#1#2
ASSIGNMENT:4-4 worksheet