Checkbox Question

The lengths of two sides of a triangle are 20 mm and 15 mm. Which of these lengths cannot represent the length of the third side.

  1. 40

  2. ×

    30

  3. ×

    20

  4. ×

    15

Collected in the board: Triangle

Steven Zheng posted 1 year ago


Answer

  1. \because 40 > 20 + 15 = 35

    \therefore 40 is not the third side of the triangle

  1. \because 30 < 20 + 15 = 35

    \therefore 30 is the third side of the triangle

  1. \because 20 < 20 + 15 = 35

    \therefore 20 is the third side of the triangle

  1. \because 15 < 20 + 15 = 35

    \therefore 10 is the third side of the triangle

Steven Zheng posted 1 year ago

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