CK-12 Geometry - Second Edition

(Marvins-Underground-K-12) #1

4.4. Triangle Congruence Using ASA, AAS, and HL http://www.ck12.org


4.4 Triangle Congruence Using ASA, AAS, and HL


Learning Objectives



  • Use the ASA Congruence Postulate, AAS Congruence Theorem, and the HL Congruence Theorem.

  • Complete two-column proofs using SSS, SAS, ASA, AAS, and HL.


Review Queue



  1. Write a two-column proof.


Given:AD∼=DC,AB∼=CB


Prove: 4 DAB∼= 4 DCB



  1. Is 4 PON∼= 4 MOL? Why or why not?

  2. If 4 DEF∼= 4 PQR, can it be assumed that:


a)^6 F∼=^6 R? Why or why not?


b)EF∼=PR? Why or why not?

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