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Holt Geometry
7-3 Triangle Similarity: AA, SSS, and SAS7-3 Triangle Similarity: AA, SSS, and SAS
Holt Geometry
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Lesson PresentationLesson Presentation
Lesson QuizLesson Quiz
Holt Geometry
7-3 Triangle Similarity: AA, SSS, and SAS
There are several ways to prove certain triangles are similar.
Holt Geometry
7-3 Triangle Similarity: AA, SSS, and SAS
Example 1: Using the AA Similarity Postulate
Explain why the triangles are similar and write a similarity statement.
Holt Geometry
7-3 Triangle Similarity: AA, SSS, and SAS
Check It Out! Example 1
Explain why the trianglesare similar and write asimilarity statement.
Holt Geometry
7-3 Triangle Similarity: AA, SSS, and SAS
Example 2A: Verifying Triangle Similarity
Verify that the triangles are similar.
∆PQR and ∆STU
Holt Geometry
7-3 Triangle Similarity: AA, SSS, and SAS
Example 2B: Verifying Triangle Similarity
∆DEF and ∆HJK
Verify that the triangles are similar.
Holt Geometry
7-3 Triangle Similarity: AA, SSS, and SAS
Check It Out! Example 2
Verify that ∆TXU ~ ∆VXW.
Holt Geometry
7-3 Triangle Similarity: AA, SSS, and SAS
Example 3: Finding Lengths in Similar Triangles
Explain why ∆ABE ~ ∆ACD, and then find CD.
Holt Geometry
7-3 Triangle Similarity: AA, SSS, and SAS
Check It Out! Example 3
Explain why ∆RSV ~ ∆RTU and then find RT.
Holt Geometry
7-3 Triangle Similarity: AA, SSS, and SAS
Example 5: Engineering Application
The photo shows a gable roof. AC || FG. ∆ABC ~ ∆FBG. Find BA to the nearest tenth of a foot.