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beellab

  • 3 years ago

Rebecca has a triangular piece of board. She cut it along a line parallel to the base of the triangle as shown below. What is the length of the line along which she cut the board?

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  1. beellab
    • 3 years ago
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  2. beellab
    • 3 years ago
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    @TuringTest

  3. imagreencat
    • 3 years ago
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    10/20 = 4/x; 1/2 = 4/x; x=8. Use the concept of similar triangles.

  4. beellab
    • 3 years ago
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    thank you!

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