CK-12 Geometry - Second Edition

(Marvins-Underground-K-12) #1

7.4. Similarity by SSS and SAS http://www.ck12.org


6. AB? =BC? =AC?



  1. If 4 ABChad an altitude,AG=10, what would be the length of altitudeDH?


Use the diagram to the right for questions 8-12.


8. 4 ABC∼4



  1. Why are the two triangles similar?

  2. FindED.

  3. BD? =BC? =DE?

  4. IsADDB=CEEBa valid proportion? How do you know?


Determine if the following triangles are similar. If so, write the similarity theorem and statement.


13.


14.


15.


16.

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