Geometry

Question Analysis:
This question involves understanding different classifications of triangles based on side lengths.
The main focus is on distinguishing a scalene triangle from other types of triangles.

Key Concept Explanation:
Triangles are classified based on their side lengths into three categories:
Scalene Triangle: All three sides have different lengths.
Isosceles Triangle: At least two sides are of equal length.
Equilateral Triangle: All three sides are of equal length.

Step-by-Step Solution:
The problem asks for a definition of a scalene triangle.
A scalene triangle has all three sides of different lengths.
By checking the answer choices:
Option A describes an isosceles triangle.
Option C describes a right triangle, which is based on angles, not sides.
Option D describes an equilateral triangle.
The correct answer is B) A triangle with all three sides of d...