How many triangles can be formed with sides of length 4 cm, 5 cm, and 10 cm?
Answer: A
To form a triangle, the Triangle Inequality Theorem must be satisfied. The sum of any two sides must be greater than the third side.
Let's check:
4 + 5 > 10? => 9 > 10. This is false.
Since the condition is not met, no triangle can be formed with these side lengths.