Geometry

=Shapes=


 * ||  ||   || definition || examples || notes ||
 * a **circle** || //**cearcall**// || Masculine noun; Plural and genitive: //cearcaill// ; ||  ||   ||   ||
 * **equiangular** || //**ionnan-cheàrnach**// (?) || //ionnan-cheàrnach// is an adjective; || An equiangular polygon is a polygon all of whose corners are the same size (i.e. angle). ||  ||   ||
 * **equilateral** || // **ionnan-thaobhach** // || //ionnan-thaobhach// is an adjective; || An equilateral polygon is a polygon all of whose sides are the same length. le taobhan ?, thaobh-ionnan ||  ||   ||
 * a **heptagon** ||  ||   ||   ||   ||   ||
 * a **hexagon** ||  ||   ||   ||   ||   ||
 * an **isosceles** triangle || // triantan **co-chasach** // ||  ||   ||   ||   ||
 * an **octagon** || //**ochd-shliosach**// ||  ||   ||   ||   ||
 * **parallelogram** ||  ||   || A parallelogram is a quadrilateral with two pairs of parallel sides. Opposite sides are of equal length, and opposite angles are equal. See also: rectangle, rhombus ||   ||   ||
 * **pentagon** || //**còig-cheàrnag**// ||  || A pentagon is a five-sided polygon. ||   ||   ||
 * **polygon** || //**ioma-cheàrnag**// ( //bhunasach// ) || feminine noun; plural: //ioma-cheàrnagan// ; genitive: //ioma-cheàrnaige// ; || A closed plane figure bounded by three or more line segments. A (simple) polygon is a flat shape consisting of non-intersecting straight lines that are joined to form a closed chain or circuit; a closed figure made by connecting non-intersecting straight line segments, where each line segment end connects to only one end of two other line segments; Wikipedia. "Complex" polygons have intersecting edges. A polygon has sides/edges ( //taobhan// ), vertices/corners ( //ceàrnan//, //oiseanan// ), an interior and an exterior . Polygons cannot have curved edges. A polygon has an area and a circumference. ||   || 1. //ioma-// is a noun prefix meaning //many-//, //multi-//, //poly-//; //ceàrn// is a masculine noun meaning "corner", just like //-gon//; //ceàrnag// is thus a "little/narrow corner". 2. cumadh ioma-cheàrnach ? ||
 * **quadrilateral** || //**ceithir-cheàrnag**// || //ceithir-cheàrnaig// is a feminine noun; plural: //ceithir-cheàrnagan// ; genitive: //ceithir-cheàrnaige// ; || A quadrilateral (or quadrangle, or tetragon) is a four-sided polygon. See also: parallelogram, trapezoid. ||  ||   ||
 * a **rectangle** || ceart-cheàrnach ||  || a parallelogram where all four corners are right angles. an equiangular quadrilateral. ||   ||   ||
 * a **regular** polygon || cothromach ||  || A polygon whose sides are all the same length, and whose angles are all the same. The sum of the angles of a polygon with n sides, where n is 3 or more, is 180° × (n - 2) degrees. (URL) ||   ||   ||
 * a **rhombus** ||  ||   || a parallelogram where all four sides have the same length, i.e. an equilateral parallelogram. ||   ||   ||
 * a **right-angled** triangle || // triantan **ceart-cheàrnach** // || trì-cheàrnag le oisean dìreach ||  ||   ||   ||
 * a **scalene** triangle || // triantan **neo-chothromach** // ||  ||   ||   ||   ||
 * a **shape** || //**cumadh**// || Masculine noun; Plural: //cumaidhean// ; Genitive: //cumaidh// ; ||  || //cumadh neo-chothromach// (an irregular shape); //cumadh ceangailte// (a composite shape); //cumadh uidhe// (an oval); //cumadh cridhe// (a heart shape); || 1. Denotes a two-dimensional shape, not a solid; 2. Derived from the verb //cum// (to fashion, mould, shape); ||
 * a **square** || //**ceàrnag**// || Feminine noun; Plural: //ceàrnagan// ; Genitive: //ceàrnaige// ; || a regular (equilateral, equiangular) quadrilateral || //ceàrnag cho-shìnteach// (a parallelogram); ||  ||
 * a **trapezoid** ||  ||   ||   ||   ||   ||
 * a **triangle** || //**triantan**//, //**trì-cheàrnag**// || 1. //triantan// is a masculine noun; plural: //triantanan// ; genitive: //triantain// ; 2. //trì-cheàrnaig// is a feminine nouns; plural: //trì-cheàrnagan// ; genitive: //trì-cheàrnaige// ; || A triangle (or trigon) is a three-sided polygon. The sum of the angles of a triangle is 180 degrees. See also: "right-angled triangle", "equilateral triangle", "isosceles triangle", "scalene triangle". || //triantan le ceàrn fharsaing// (an obtuse-angled triangle); || 1. Alternatives: //trì-oisinneag// ; //trì-oiseaneag// ; //trì-cheàrnach// ; //trì-oisinneach// ; cumadh trì-thaobhach; cumadh trì-cheàrnach. ||