1. The problem asks to classify a triangle by its sides. 2. Triangles can be classified as: - Equilateral: all three sides are equal. - Isosceles (but not equilateral): exactly two sides are equal. - Scalene: all three sides are different. 3. The triangle shown has a right angle, but classification by sides depends only on side lengths, not angles. 4. Since the triangle has a right angle and no indication that any sides are equal, it is likely scalene. 5. Therefore, the triangle is classified as scalene by its sides.