Geometry Module 2, Topic D, Lesson 21

Work Group

Student Outcomes

  • Students understand that the altitude of a right triangle from the vertex of the right angle to the hypotenuse divides the triangle into two similar right triangles that are also similar to the original right triangle.
  • Students complete a table of ratios for the corresponding sides of the similar triangles that are the result of dividing a right triangle into two similar sub-triangles.

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Common Core Learning Standards

CCLS State Standard
G.SRT.4 Prove theorems about triangles. Theorems include: a line parallel to one side of a triangle divides...

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