Question

Which three lengths CANNOT be the lengths of the sides of a triangle?

Question 2 options:

A. 21 m, 6 m, 10 m

B. 11 m, 11 m, 12 m

C. 23 m, 17 m, 14 m

D. 5 m, 7 m, 8 m

Answer 1

The set of sides that cannot be the sides of a triangle is set A.
The sum of two sides of a triangle must be longer than the third side, but 6 + 10 is less than 21, so it cannot be a triangle.

Hope this helps =)