Edge element (edg) as a first-order element (left) and a second-order element (right):

Triangular element (tri) as a first-order element (left) and a second-order element (right):

Quadrilateral element (quad) as a first-order element (left) and a second-order element (right):

Tetrahedral element (tet) as a first-order element (left) and a second-order element (right):

Pyramid element (pyr) as a first-order element (left) and a second-order element (right):

Prism element (prism) as a first-order element (left) and a second-order element (right):

Hexahedral element (hex) as a first-order element (left) and a second-order element (right):