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the perimeter of triangle ABC is 21 units. Give the perimeter of the triangle formed by its midsegments (connecting midpoints of all sides).

  • geometry -

    Connecting the mid-points of the triangle sides creates a triangle with sides of half the lengths of the given triange making the perimeter 10.5.

  • geometry -

    Two sides of a triangle ABC have lengths 7cm and 9cm. Which of the following could not be the length of triangle ABC's third side

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