Chapter 8 Right Triangles and Trigonometry

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• Lesson 7-1 Solving Proportions

  Algebra Solve for x. If necessary, round answers to the nearest thousandth.

  1. 0.2734 = x 17 0.2734 , equals , x over 17
  2. 0.5858 = 24 x 0.5858 , equals , 24 over x
  3. 0.8572 = 5271 x 0.8572 , equals , 5271 over x
  4. 0.5 = x 3 x + 5 0.5 equals . fraction x , over 3 x plus 5 end fraction

• Lesson 7-3 Proving Triangles Similar

  Name the postulate or theorem that proves each pair of triangles similar.

  5. C D ¯ ‖ A B ¯ c d bar , double vertical bar . eh b bar

     

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  7. J K ¯ ⊥ M L ¯ j k bar , up tack , m l bar

     

• Lesson 7-4 Similarity in Right Triangles

  Algebra Find the value of x in Δ A B C cap delta eh b c with right ∠ C angle c and altitude C D ¯ . c d bar , .

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