Fig. 3
A perspective view of the reconstructed round wedge prism. The section passing through the origin O perpendicular to the XY plane is a prism with apex angle αφ, forming an angle φ with the principal section. The triangles OAB (φ = 0) and OPG (φ = π) are the principal sections of the original round wedge prism. When 0 ≤ φ < π/2 and 3π/2 ≤ φ < 2π, the triangle OCD is a prism with apex O and apex angle αφ, whereas when π/2 ≤ φ < 3π/2, the quadrangle OPFE is a prism with apex Q and apex angle αφ. C, D, E, and F are vertically projected to the XZ plane, at points C’, D', E', and F’, respectively. Q, intersection point of OE and PF in the XY plane.
