Question

Two sides of a triangle are 10 mm and 7 mm.

Determine the length of the third side from the choices given.

Remember, the sum of the two shortest sides must be greater than the longest side.

(1 point)

O 2 mm

1 mm

O 20 mm

5 mm

Answer 1

Triangle inequality: the third side x must satisfy |10 − 7| < x < 10 + 7 → 3 < x < 17.
From the choices only 5 mm lies between 3 and 17.

Answer: 5 mm.