|rhombus rectangle trapezium See also trapezoid a quadrilateral whose opposite sides are parallel and equal in length|
|[C16: via French from Late Latin, from Greek parallēlogrammon, from parallēlos|
|a gadget; dingus; thingumbob.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|parallelogram (pār'ə-lěl'ə-grām') Pronunciation Key
A four-sided plane figure with opposite sides parallel. Rhombuses and rectangles are parallelograms.