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7 May, 12:21

Could 10.5 cm, 8.0 cm, and 4,0 cm be the side lengths of a triangle?

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Answers (1)
  1. 7 May, 15:15
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    Let’s use the basis that a 3:4:5 triangle would work.

    Let’s multiply that ratio by 2.

    6:8:10

    A 10.5:8:4 triangle wouldn’t work because only one length matches.

    An easier method:

    Add 8 and 4 to get 12.

    10.5 < 12, so it is not possible to make a triangle
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