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BASIC GEOMETRY Section 7.3: Triangle Similarity: AA, SSS, & SAS. Proving Triangles are Similar. AA ~ Thm: If two angles of one triangle are congruent to two angles in another triangle, then the triangles are similar.

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Basic geometry section 7 3 triangle similarity aa sss sas

BASIC GEOMETRYSection 7.3: Triangle Similarity: AA, SSS, & SAS


Proving triangles are similar
Proving Triangles are Similar

  • AA ~ Thm: If two angles of one triangle are congruent to two angles in another triangle, then the triangles are similar.




Proofs
Proofs two sides of another and the included angles are congruent, then the triangles are ~.

  • These 3 Thms are used the same as the congruent triangles ones in proofs.

  • Properties of Similarity



Example 2 verify that the triangles are similar
Example 2: Verify that the triangles are similar. a similarity statement.

A) ∆PQR & ∆STU B) ∆DEF & ∆HJK




Assignment 3
Assignment #3 BA to the nearest tenth.

  • Page 474 #’s 1-6,9,10,34-36,(44)


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