In general, we will call trapezoidal shapes having 8 vertices and up to 6 trapezoid faces. Besides that, two of the opposite faces are parallel to XY plane and are positioned at dZ. Since general trapezoids are seldom used in detector geometry descriptions, there are several primitives implemented in the modeller for particular cases.

Classes
class	TGeoArb8
	An arbitrary trapezoid with less than 8 vertices standing on two parallel planes perpendicular to Z axis. More...

class	TGeoGtra
	A twisted trapezoid. More...

class	TGeoTrap
	A general trapezoid. More...

class	TGeoTrd1
	A trapezoid with only X varying with Z. More...

class	TGeoTrd2
	A trapezoid with only X varying with Z. More...

Classes