Example image of eyePlorer eyePlorer map for 'Trapezoid': American English British English Geometry Mathematical notation Vertex (geometry) Quadrilateral Oxford English Dictionary Proclus Euclid Parallelogram Heron's formula Brahmagupta's formula Cyclic quadrilateral Bretschneider's formula Isosceles trapezoid Angle Degree (angle) If and only if Supplementary angles Diagonal Ratio Ames trapezoid Hammered dulcimer Mutual of New York Building Nestlé Chunky Radial collateral ligament (thumb) Trapezo-rhombic dodecahedron Trapezoidal wing Wedge (geometry) Bayan (accordion) Bir Tawil Capitoline Museums Hexagonal bifrustum Hilarri Kanklės Keystone effect Long barrow Monument to the Heroes of the Air Palmar carpometacarpal ligament Paul Reisler Pentagonal bifrustum Piazza Saffi Rio 200 Robert F. Kennedy Department of Justice Building Severn-Cotswold tomb Skrabalai Square bifrustum Tanit d'or Trapezoidal rule Triangular bifrustum