Pertaining to, or of the nature of, a hypotenuse; forming a hypotenuse. Now rare.

Geometry. Of a line or surface: inclined at an angle other than a right angle. Of an angle: less than 180 degrees but not equal to a right angle. Of…

Mathematics. Of or relating to a geometric figure whose points satisfy one or more mathematical relations or conditions, esp. as the solutions to…

Geometry. Designating a geometric figure intersecting or otherwise described relative to a focus or foci (esp. of a conic section); of, relating to…

Of or relating to an octant; spec. recurring in each octant of the compass.

Geometry, etc. Said of a figure or body whose points or parts are equably distributed about a dividing line, plane, or point, i.e. arranged in…

Geometry. Having a common relation to two or more (esp. intersecting) circles or spheres. Chiefly in radical axis, centre, plane, etc.: see…

Geometry. Designating a triangle in which, with respect to a given conic section, each side lies on the polar (polar, n. 2) of the vertex to…

Of the second degree; spec. (of a surface) having a Cartesian equation which is algebraic and of the second degree.

Geometry. Of a polygon, polyhedron, or polytope: capable of being generated from a convex polygon, etc., by extending the edges, etc., until they…

Designating a region of space having one or more internal bounding surfaces (or curves, when the region is two-dimensional) unconnected with the…

belonging to a homoeoid.

having three diameters.

Mathematics. Of a surface: having only one side; such that any two points may be joined by a continuous line that does not cross an edge.

limited in one direction and extending to infinity in the other.

Of, relating to, or involving simplices (simplex, n. 2). Also: that is a simplex.

= mirror-symmetrical, adj.