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Apex — may refer to:* Apex of the heart, the lowest superficial part of the heart * Apex (mollusc), the tip of the spire of the shell of a gastropod * Apex (headdress), a pointed piece of olive wood, the base of which was surrounded with a lock of wool … Wikipedia
geometry — /jee om i tree/, n. 1. the branch of mathematics that deals with the deduction of the properties, measurement, and relationships of points, lines, angles, and figures in space from their defining conditions by means of certain assumed properties… … Universalium
Cone (geometry) — Not to be confused with the conical surface.. A right circular cone and an oblique circular cone A cone is an n dimensional geometric shape that tapers smoothly from a base (usually flat and circular) to a point called the apex or vertex.… … Wikipedia
projective geometry — the geometric study of projective properties. [1880 85] * * * Branch of mathematics that deals with the relationships between geometric figures and the images (mappings) of them that result from projection. Examples of projections include motion… … Universalium
Pyramid (geometry) — This article is about the polyhedron pyramid (a 3 dimensional shape); for other versions including architectural Pyramids, see Pyramid (disambiguation). An n sided pyramid is a polyhedron formed by connecting an n sided polygonal base and a point … Wikipedia
Cylinder (geometry) — A right circular cylinder A cylinder is one of the most basic curvilinear geometric shapes, the surface formed by the points at a fixed distance from a given line segment, the axis of the cylinder. The solid enclosed by this surface and by two… … Wikipedia
Affine geometry — is a form of geometry featuring the unique parallel line property (see the parallel postulate) but where the notion of angle is undefined and lengths cannot be compared in different directions (that is, Euclid s third and fourth postulates are… … Wikipedia
Trigonal pyramidal molecular geometry — Infobox molecular geometry Symmetry group= C3v Electron direction=4 Atom direction=3 Bond angle … Wikipedia
Wedge (geometry) — In geometry, a wedge is a polyhedral solid defined by two triangles and three trapezoid faces. A wedge has five faces, nine edges, and six vertices. A wedge is a subclass of the prismatoids.A wedge can be considered a degenerate digonal cupola… … Wikipedia
Kite (geometry) — Kite A kite showing its equal sides and its inscribed circle. Type Quadrilateral Edges and vertices 4 Symmetry group D1 (*) In Euclid … Wikipedia
