Unit 6 · Geometry

Chapter 6.3

Similar Triangles

Two triangles with the same angles are scaled copies, and one scale factor unlocks every length at once.

free · lesson 33 of 42

By the end

  1. 01Find similar triangles from equal angles and set up proportions
  2. 02Use the angle bisector theorem and facts about medians and the incircle

In unit 6

  1. 6.1Angles, Polygons, and the Triangle Inequality
  2. 6.2Right Triangles
  3. 6.3Similar Triangles
  4. 6.4Area by Pieces and Ratios
  5. 6.5Circles: Angles and Measure
  6. 6.6Tangent Lines and Circles
  7. 6.7Coordinates and Lattice Points
  8. 6.8Moves and Shapes
  9. 6.9Thinking in Three Dimensions
  10. 6.10Which Idea Opens It? Geometry
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