Question

choose all the scalene triangles.

Explanation:

Step1: Recall the definition of a scalene triangle

A scalene triangle has all three sides of different lengths.

Step2: Analyze each triangle

• The pink triangle on the top - left: Assume side lengths are different (visual inspection as no equal - length indicators).
• The green triangle: Assume two sides are equal (symmetry in shape).
• The pink triangle on the top - right: Assume two sides are equal (symmetry in shape).
• The orange triangle on the bottom - left: Assume all sides are different (no symmetry).
• The blue triangle: Assume all sides are equal (equilateral - like shape).
• The orange triangle on the bottom - right: Assume all sides are different (no symmetry).

Answer:

The pink triangle on the top - left, the orange triangle on the bottom - left, and the orange triangle on the bottom - right.