As part of a geometry assignment, Celina drew a scalene triangle. Which of the following dimensions could represent the side lengths of the triangle Celina drew?
A. 6, 7, 8
B. 4, 4, 4
C. 1, 1, 3
D. 2, 3, 3
The answer is A. 6, 7, 8.
A scalene triangle is a triangle in which all three sides have different lengths, and therefore options B, C, and D are not possible since they have at least two sides with the same length.
Option A, 6, 7, 8, is possible since all three sides have different lengths, making it a valid scalene triangle.