Back مضلع قابل للإنشاء Arabic Polígon construïble Catalan Konstruierbares Polygon German Polígono construible Spanish Konstruoituva monikulmio Finnish Polygone constructible French מצולע בר-בנייה HE Szerkeszthető sokszögek Hungarian Polígono construtível Portuguese Конструируемый многоугольник Russian
In mathematics, a constructible polygon is a regular polygon that can be constructed with compass and straightedge. For example, a regular pentagon is constructible with compass and straightedge while a regular heptagon is not. There are infinitely many constructible polygons, but only 31 with an odd number of sides are known.