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Home > INT1 > Chapter 10 > Lesson 10.1.3 > Problem 10-56

10-56.

Multiple Choice: What information would you need to know about the diagram at right in order to prove that by ?  

  1.  

  1.  

  1.  

  1.  

  1. None of these

Triangle A, B, C. Two internal triangles are created by a line segment A, D drawn from the upper vertex to the base at right angles.

(a)

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