en.wikipedia.org/wiki/Solid_angle

In geometry, a solid angle (symbol: Ω) is the two-dimensional angle in three-
dimensional space ... 3.1 Cone, spherical cap, hemisphere; 3.2 Tetrahedron; 3.3
Pyramid ... The solid angle of a sph...

www.answers.com/Q/A_cone_is_a_solid_made_from_a_polygonal_base_a_point_not_in_the_same_plane_as_the_base_and_all_points_between_them

False! Apex! ... A right cone is a solid consisting of a disc a point not in the same
plane as the disc and all the points ... Is A cone is a solid made from a polygonal
base a point not in the same plane as the base and all points between them?

www.reference.com/math/3-d-shape-four-faces-aac21f5287eb897a

A three-dimensional shape that is made up of four triangles is called a ... Cone Is
a Solid Made from a Disc Any Point on That Disc and All Points between Them ...

math.berkeley.edu/~giventh/hw140s.pdf

Any isometry F maps a triangle ABC to another triangle. A′B′C′ with the ...
then all points equidistant to them are situated on the line perpendic- ular to the
segment ... The curve (t, t3,t4) has an inflection point at the origin and thus has at
this point ...... on the disc D in terms of the geodesic curvature of the boundary ∂
D.

math.ucr.edu/home/baez/physics/Relativity/SR/rigid_disk.html

Imagine our solid as made up of a large number of atoms A1, ..., An. Between any
two nearby atoms Ai and Aj there is a "natural distance" dij, natural in ..... You
could move each disk point such that not all points at equal distance from the ...
it's the time in the Earth-centred Inertial Frame, but that's not appropr...

math.psu.edu/katok_a/Chapter1.pdf

where R is the radius; the sphere is the set of all points in R3 whose coordinates (
x ... everywhere, while the cone has a special point, the intersection of the two
lines in .... Now any surface which is given by an equation F(x, y, z) = 0. (with or
..... disc, where the actual distance between points is much less than the.
Euclidean ...

www.andrew.cmu.edu/user/ramesh/teaching/course/48-175/lectures/8.SolidsAndSurfaces.pdf

Points can be inside a solid (indeed, a surface or any geometric figure), on the
boundary ... by walls, floors and ceilings, are solids as are the physical elements
that enclose them. ... The collection of points on the disc for all such discs
constitutes a rotational ..... find the intersection point(s) between the line and the
cone.

www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9847

Where a disk is used, the keys or other dangerous projections not covered by
disk ... All exposed parts of horizontal shafting seven (7) feet or less from floor or
working .... (7) feet is maintained between belt and floor at any point outside of
guard. ... the cone pulley and belt shall be guarded to a height of 3 feet
regardless of ...

arxiv.org/pdf/math/0008107

be transformed into any other triangulation of the same manifold by a finite ... An
algorithm, making all possible Pachner moves on a triangulation of our 3-
manifold. M with t .... normal disc types with a tube between them that is parallel
to an edge of the ..... 3-ball X. This can be made simplicial by shelling one cone at
a time.

homepages.inf.ed.ac.uk/rbf/CVonline/LOCAL_COPIES/BOWYER1/c6.htm

Set-theoretic or Constructive-solid-geometry Modellers ... for b-rep modelling: the
plane, the cylinder, the sphere, the cone, and the torus: ... the set-theoretic
description of shapes directly, without translating them to b-rep. ... the point is
inside or outside a set-theoretic geometric model of any complexity. ... For
example a di...