cylinder
cylinders: slide on the small sides, roll on the round one
The square based pyramid does not stack or roll.
Cube
a sphere
cylinder
A pyramid will not roll and you cannot stack objects on top.
cylinders: slide on the small sides, roll on the round one
Solid shapes that can slide and roll include cylinders, spheres, and cones. Cylinders can roll along their curved surface, while spheres can roll in any direction due to their uniform curvature. Cones can roll on their circular base, although their movement is limited to a specific direction. In contrast, cubic shapes can slide but do not roll effectively due to their flat surfaces.
Two shapes that cannot stack effectively are a sphere and a flat square. The spherical shape lacks flat surfaces for stable placement, causing it to roll off or shift when weight is applied. In contrast, the square's flat surfaces are designed for stability, but they can't accommodate the curvature of the sphere, preventing a secure stack.
The square based pyramid does not stack or roll.
A cone can roll due to its circular base, allowing it to move smoothly across a flat surface. However, it does not stack well like other shapes, such as a cylinder or cube, because its pointed apex and sloped sides create an unstable structure when placed on top of another cone. As a result, while a cone can roll, it is not ideal for stacking.
no
The shape that can slide and roll, stack and roll, and has no vertices is a cylinder. Cylinders have curved surfaces that allow them to roll smoothly, and they can stack on top of each other without any sharp edges. Their continuous surface and circular bases provide stability when stacked.
A cylinder
No
yes
Cube