View source for Anti-prism

A semi-regular polyhedron (cf. [[Semi-regular polyhedra|Semi-regular polyhedra]]) in which two parallel faces are congruent regular <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a012/a012680/a0126801.png" />-gons, while the remaining <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a012/a012680/a0126802.png" /> faces are regular triangles (cf. Fig.).

<img style="border:1px solid;" src="https://www.encyclopediaofmath.org/legacyimages/common_img/a012680a.gif" />

Figure: a012680a