Prism
A transparent body, with usually three sides and two equal and parallel triangular ends or bases.
Ditetragonal prism
"The dietetragonal prism is a form consisting of eight rectangular vertical faces, each of which intersects…
Dihexagonal prism
"The dihexagonal prism has twelve rectangular vertical faces, each of which intersects all three of…
First order prism
"The prism of the first order consists of four rectangular vertical faces, each of which intersects…
Orthohombie prism
"Crystal faces are described according to their relations to the crystallographic axes. A series of…
Second order prism
"The prism of the second order consists of four rectangular vertical faces, each of which intersects…
Angles With Perpendicular Sides Are Equal or Supplementary Proof
Illustration used to prove "Two angles whose sides are perpendicular each to each are either equal or…
Exterior Angle Proof
Illustration used to prove "An exterior angle of a triangle is equal to the sum of the two remote interior…
Sum of Exterior Angles of a Polygon Proof
Illustration used to prove "If the sides of any polygon are prolonged in succession one way, no two…
Sum of Interior Angles of a Polygon Proof
Illustration used to prove "The sum of all the angles of any polygon is twice as many right angles as…
Polar Property
If the chords of a circle are drawn through a fixed point, then the points of intersection of the pairs…