Question

which figure has an order 3 rotational symmetry? right triangle equilateral triangle right trapezoid regular hexagon

Explanation:

Rotational symmetry order is the number of rotations (≤360°) mapping a shape to itself. Right triangle/right trapezoid: order 1. Equilateral triangle: 3 rotations (120°, 240°, 360°), order 3. Regular hexagon: order 6.

Answer:

equilateral triangle