### Vertical Cross Section of Spherical Zones of a Casting

An illustration of a vertical cross section of the spherical zones of a casting with a diameter of 16…

### Invariable Cone

Possible forms of the invariable cone by means of the intersections with a concentric spherical surface.

### Comparative Volumes Of A Cone, Sphere, And Cylinder

Illustration used to compare the volumes of a cone, a sphere, and a cylinder.

### Cone depicting Conic Sections

Diagram of a cone with spheres and cut by a plane to depict the conic sections.

### Cone depicting Conic Sections

Diagram of a cone with inscribed spheres and cut by various planes to depict the conic sections: circle,…

### Comparative Surfaces Of A Cylinder And Sphere

Illustration used to compare the surfaces of a cylinder and a sphere.

### Intersecting Cylinder and Sphere

Illustration of the intersection of a cylinder and a sphere.

### Intersecting Cylinder and Sphere

Illustration of the intersection of a cylinder and a sphere.

### Double Convex Lens

"The double convex lens may be described as the part common to two spheres that intersect each other.…

### Sphere Cut By Plane

Diagram used to prove the theorem: "Every section of a sphere by a lane is a circle."

### Sphere Tangent to Plane

Diagram used to prove the theorem: "A plane perpendicular to a radius at its extremity is tangent to…

### Spherical Polygon

Illustration of a spherical polygon.

### Spherical Polygon

Illustration of a spherical polygon.

### Spheres of the Ptolemaic System

A diagram showing the order of the universe as expounded by Ptolemy. Its basic concept surmises that…

### Spherical Pyramid

Illustration of a spherical pyramid.

### Spherical Sector

Illustration of a spherical sector.

### Sphere With Sectors and Arcs

Diagram of a sphere with sectors and arcs drawn.

### Spherical Segments

Illustration of a spherical segments.

### Sphere With Sectors and Arcs

Illustration of a sphere with sectors and arcs.

### Sphere With 8-inch Diameter Cut by Planes

An 8-inch sphere cut by parallel planes, one 2 inches from center and the other 6 inches from center.…

### Sphere With Arcs and Poles

A sphere with arcs and poles. "The distance of all points in the circumference of a circle of a sphere…

### Sphere With Arcs

A sphere with arcs drawn.

### Arcs Drawn on Sphere

Illustration of a sphere with arcs drawn.

### Circle Made by Plane Passing Through a Sphere

"Every section of a sphere made by a plane is a circle."

### Circumference of a Circle of a Sphere

Diagram used to prove the theorem: "All points in the circumference of a circle of a sphere are equally…

### Sphere Cut Into Pyramids.

An illustration of a sphere cut into polygons as bases with their vertices at the center of sphere.

### Sphere Inside of Cylinder.

An illustration of a sphere inside of a cylinder with radius/diameter labeled. Illustration for showing…

### Development Of Sphere

Illustration showing the development of a sphere by the perspective of its resolved cones.

### Hollow Sphere

An illustration of a hollow sphere.

### Sphere Inscribed in a Cube

Illustration of a sphere inscribed in a cube.

### Sphere Inscribed in a Cube

Illustration of a sphere inscribed in a cube.

### Sphere Inscribed in Tetrahedron

Illustration of a sphere inscribed in a tetrahedron.

### Sphere Inscribed in Tetrahedron

Illustration of a sphere inscribed in a tetrahedron.

### Sphere with arcs and circles labeled.

An illustration of a sphere showing diameter, arcs, and circles. A sphere is a solid bounded by a curved…

### Sphere With Arcs, Circles, and Zones Labeled.

An illustration of a sphere showing diameter, arcs, and circles. A sphere is a solid bounded by a curved…

### Sphere Made by Revolution of Semicircle

Illustration of a sphere generated by the revolution of a semicircle ACB about its diameter AB as an…

### Material Sphere

Illustration of a material sphere that can be used to find its diameter.

### Plane Passing Through a Sphere

Illustration of a plane passing through a sphere.

### Sphere With Tangent Plane

Illustration of a sphere with a tangent plane. "A plane perpendicular to a radius at its extremity is…

### Sphere With Tangent Plane

Illustration of a sphere with a tangent plane. "A plane perpendicular to a radius at its extremity is…

### Polyhedral Angle in a Sphere

Illustration of a sphere with a polyhedral angle whose vertex is at the center of the sphere and whose…

### Polyhedral Angle in a Sphere

Illustration of a sphere with a polyhedral angle.

### Sphere Formed By Pyramids

Illustration showing that "the solids formed by the dissected part of the sphere are pyramids."

### Sphere With Quadrants and Poles

A sphere with quadrants and poles. "A point on the surface of a sphere, which is at the distance of…

A sphere with quadrants drawn on it.

### Sphere With a Radius of 1 foot

An illustration of a sphere showing a radius of 1 foot. Illustration could be used for calculating volume.

### Segment Of Sphere

An illustration of a segment of a sphere.

### Wooden Sphere

A wooden hollow sphere created by using a lathe and wooden templet at a desired diameter.

### Zone Of Sphere

An illustration of a zone of a sphere.

### Zones or Segments of Spheres

An illustration of a zone of a sphere. A zone occurs when a sphere is cut by parallel planes that are…

### Zones or Segments of Spheres

An illustration of a zone of a sphere. A zone occurs when a sphere is cut by parallel planes that are…

### Equal Spheres With Triangles

Illustration of equal spheres with equal triangles.

### Equal Spheres With Triangles

Illustration of equal spheres with equilateral and equiangular triangles.

### Intersecting Spheres

Illustration of two intersecting spheres. "The intersection of two spherical surfaces is the circumference…

### Measure of a Spherical Angle

Diagram used to prove the theorem: "A spherical angle is measured by the arc of a great circle described…

### Flanged Spherical Segment

An illustration of a flanged spherical segment with a diameter of 10 inches. Illustration could be used…

### Volume of Spherical Segment

Diagram used to prove the theorem: "The volume of a spherical segment is equal to the sum of two cylinders…

### Side Comparison of Spherical Triangle

Diagram used to prove the theorem: "In a spherical triangle, the greater side is opposite the greater…

### Superimposed Symmetrical Spherical Triangles

Diagram showing 2 superimposed symmetrical spherical triangles.

### Symmetrical Spherical Triangles

Diagram showing 2 symmetrical spherical triangles.