lesson 7-3 similar triangles with...
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Lesson 73 Similar Triangles with answers.notebook
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January 22, 2015
Questions/Main IdeasLesson 7-3 Similar Triangles
Postulate 6.1 Angle-Angle (AA) SimilarityIf two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar.
Theorem 7.2 Side-Side-Side (SSS) SimilarityIf the corresponding side lengths of two triangles are proportional, then the triangles are similar.
Questions/Main Ideas
Lesson 73 Similar Triangles with answers.notebook
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January 22, 2015
Theorem 7.3Side-Angle-Side (SAS) SimilarityIf the lengths of two sides of one triangle are proportional to the lengths of two corresponding sides of another triangle and the included angles are congruent, then the triangles are similar.
Questions/Main Ideas
Example 1Determine whether the triangles are similar. If so, write a similarity statement. Explain your reasoning.a. b.
Questions/Main Ideas
Lesson 73 Similar Triangles with answers.notebook
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January 22, 2015
Example 2Determine whether the triangles are similar. If so, write a similarity statement. Explain your reasoning.a. b.
Questions/Main Ideas
Example 3If ΔRST and ΔXYZ are two triangles such that which of the following would be sufficient to prove that the triangles are similar?
Questions/Main IdeasRS 2XY 3
=
Lesson 73 Similar Triangles with answers.notebook
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January 22, 2015
Theorem 7.4Similarity of triangles is reflexive, symmetric, and transitive.
Questions/Main Ideas
Example 4Given RS // UT, RS = 4, RQ = x + 3, QT = 2x + 10, UT = 10, find RQ and QT.
Questions/Main Ideas
Lesson 73 Similar Triangles with answers.notebook
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January 22, 2015
Example 5Josh wanted to measure the height of the Sears Tower in Chicago. He used a 12-foot light pole and measured its shadow at 1 P.M. The length of the shadow was 2 feet. Then he measured the length of the Sears Tower's shadow and it was 242 at that time. What is the height of the Sears Tower?
Questions/Main Ideas
Lesson 73 Similar Triangles with answers.notebook
6
January 22, 2015
Lesson 73 Similar Triangles with answers.notebook
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January 22, 2015