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Proving Triangles are Similar

Proving Triangles are Similar. Lesson 8-5. Content Objective. Apply SSS and SAS Similarity Theorems. Language Objectives. State: SSS Similarity Theorem SAS Similarity Theorem. Recall. Definition of Similar Polygons Scale Factor AA Similarity Postulate. SSS Similarity Theorem.

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Proving Triangles are Similar

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  1. Proving Triangles are Similar Lesson 8-5

  2. Content Objective • Apply SSS and SAS Similarity Theorems.

  3. Language Objectives • State: • SSS Similarity Theorem • SAS Similarity Theorem

  4. Recall • Definition of Similar Polygons • Scale Factor • AA Similarity Postulate

  5. SSS Similarity Theorem • If the lengths of the corresponding sides of two triangles are proportional, then the triangles are similar. A AC = CB = BA ΔABC ~ ΔDEF DF FE ED D C F B E

  6. SAS Similarity Theorem • If the angle of one triangle is congruent to an angle of a second triangle and the lengths of the sides including these angles are proportional, then the triangles are similar. A D <B <E and AB = BC ΔABC ~ ΔDEF DE EF C F B E

  7. Practice

  8. Indirect Measurement

  9. Homework • P. 492: 6-14, 19-25, 27, 28, 39-45

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