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Properties of Similar Triangles

Move point A, B or C to create any triangular shape. 1. DEF is similar to triangle ABC. What makes them similar? 2. Use point E to create create other triangles similar to triangle ABC. Observe what change and what does not change.

What stays the same for similar triangles?

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  • A
  • B
  • C
  • D
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What changes for similar triangles?

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  • A
  • B
  • C
  • D
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What do you call the ratio between side lengths of similar triangles?

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  • B
  • C
  • D
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