Determine the type of triangle that has side lengths of 18, 24, and 42. a. scalene triangle b. isosceles triangle c. equilateral triangle d. isn't triangle

Based on the side length alone, the triangle is definitely not isosceles or equilateral, because none of the sides are the same. Therefore, B and C are eliminated. The triangle seems like it could be scalene, but here's the catch: The total length of the first two sides have to be greater than the third side. It can not be equal. 18 + 24 is 42. 42 = 42, so it would not be a triangle. The answer is D.

100 kilometers per piles hour