trapezoidal is part of:
50% tapered
trapezoidal contains:
Full expansion for trapezoidal:
95% 1x6x3 Trapezoidal Basin End-Cap
90% 3x4 Notched Trapezoidal Plate
90% 3x4 Tri-Slope Brick w/ 1x2 Top
90% 4x4 Angular Cockpit Bottom
90% 4x4 Dual-Tapered Dual-Notched Brick
90% 4x4 Dual-Tapered Sloped Brick,1x2 Top
90% 4x4 Dual-Tapered Stingray Sloped Brick
90% 4x4 Notched Trapezoidal Nose Brick
90% 6x7 Trapezoidal Boat Plate
80% 3x6x3 Trapezoidal Basin Dumping-End
80% 6x7 Notched Trapezoidal Boat Brick
80% 6x7 Notched Trapezoidal Boat Deck
80% 6x8 Thick Trapezoidal Lattice Plate
70% 8x8 Notched Trapezoidal Plate