Question

which figure is a scalene triangle?

Explanation:

Step1: Recall scalene triangle definition

A scalene triangle has all - sides of different lengths.

Step2: Analyze each option

The first figure is a trapezoid, not a triangle. The second triangle has all sides equal (6 inches), so it is an equilateral triangle. The third triangle has side - lengths 6 inches, 6 inches, and 3 inches. The fourth triangle has two sides of length 6 inches. The triangle with side - lengths 6 inches, 3 inches, and a non - given third side (but different from 3 and 6) is the scalene triangle.

Answer:

The triangle with side - lengths 6 inches and 3 inches (the third option)