penrose triangle, penrose tribar, impossible tribar
sheep, lamb, warning
beads in triangles, triangle, preciosa beads
geometric, triangle, design
penrose triangle, the impossible triangle, optical ilusion
bermuda triangle, ocean, bermuda
colorful, rainbow, gradient
polygon, polygonal, gold
penrose triangle, the impossible triangle, optical ilusion
ufo, spaceship, alien
brick, truss, half-timbered house
