Категория noun.shape

a four-sided polygonquadrangle; quadrilateral; tetragon;
a three-sided polygontriangle; trigon; trilateral;
something approximating the shape of a triangletriangle;
a triangle whose interior angles are all acuteacute-angled triangle; acute triangle;
a three-sided regular polygonequiangular triangle; equilateral triangle;
an object shaped like an equilateral triangledelta;
a triangle with two equal sidesisosceles triangle;
a triangle that contains no right angleoblique triangle;
a triangle that contains an obtuse interior angleobtuse-angled triangle; obtuse triangle;
a triangle with one right angleright-angled triangle; right triangle;
a triangle with no two sides of equal lengthscalene triangle;
a regular polygon formed by extending each of the sides of a regular hexagon to form two equilateral triangleshexagram;
(mathematics) one of a set of parallel geometric figures (parallel lines or planes)parallel;
a quadrilateral whose opposite sides are both parallel and equal in lengthparallelogram;
a quadrilateral with no parallel sidestrapezium;
a quadrilateral with two parallel sidestrapezoid;
a plane figure with 5 or more points; often used as an emblemstar;
(mineralogy) a star-shaped figure with six rays that is seen in some crystal structures under reflected or transmitted lightasterism;
a star with 5 points; formed by 5 straight lines between the vertices of a pentagon and enclosing another pentagonpentacle; pentagram; pentangle;
a five-sided polygonpentagon;