Question: A triangle and incomplete proof are shown. Given: LB=ZC AD is an altitude of AABC. Prove: AABC is isosceles. D B Place the statements and

A triangle and incomplete proof are shown. Given: LB=ZC AD is an altitude of AABC. Prove: AABC is isosceles. D B Place the statements and reasons in the blanks to complete the flow chart proof. AD is an altitude of AABC. LB= 4C Given Given A ADC = 4 ADB AC = AB m < ADC = 90 o m 4 ADB = 90 0 4 ADC = 4 ADB Definition of an Definition of AABC is isosceles altitude congruence Definition of an isoscel triangle SAS AAS SSS CPCTC HL Reflexive property Transitive property AD = AD AD = AB

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