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Geometry · Chapter 7 · Lesson 7.3 · Printable PDF

Proving Two Triangles Similar Worksheet with Answer Key

5 problems on proving triangles similar: reading a similarity statement, choosing AA, SAS or SSS, rectangle and right angle figures, and a proof about medians. 2 pages, with a worked answer key.

5 problems2 pagesanswer key
Printable Proving two triangles similar worksheet with answer key - Geometry (Page 1 PDF preview)
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Try one first: a free Chapter 1 worksheet (PDF, no sign-in).

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What's on the worksheet

  1. Decide which proportions and angle statements follow from a similarity and fix the false ones.
  2. Decide whether pairs of triangles must be similar and name the criterion.
  3. Prove two triangles in a rectangle are similar, then find DF and AF.
  4. Prove two right triangles with perpendicular lines are similar.
  5. Prove triangles with midpoints of corresponding sides are similar, then find DN.

Teach it first

The free lesson teaches it with worked examples and practice problems.

Proving two triangles similar: the lesson ›

More Chapter 7 worksheets: Similarity