Ellipse

The solid elliptical structural shape has a filled cross-section bounded by an ellipse. It exhibits anisotropic bending properties, with different strengths about its major and minor axes, which can be leveraged for specific loading conditions. While less common than rectangular or circular solid sections, its smooth, continuous curve can be aesthetically pleasing, leading to its use in architectural elements, custom furniture, and some specialised mechanical components where directional strength needs align with its geometry.