Hyperbola Tangent Triangles
All triangles formed by a tangent and the asymptotes of an hyperbola are equal in area.
Involution
The three points in which any line cuts the sides of a triangle and the projections, from any point…
Centrodes
Aronhold stated if any three bodies have plane motion their three virtual centers are three points on…
Conic Sections 2D
Two dimensional view of the cuts required to create the conic sections hyperbola, parabola, ellipse,…
Orthographic Pyramid Projection
An orthographic projection of a pyramid from three dimensional space into two dimensional space
Hexakis-octahedron
"Here each face of the octahedron is replaced by six scalene triangles, so that altogether there are…
Hexakis-tetrahedron
"The hemihedral form {hkl} of the hexakis-octahedron; it is bounded by twenty-four scalene triangles…
Ditetragonal Bipyramid
"This is the general form; it is bounded by sixteen scalene triangles, and all the indices are unequal."…
Tetragonal Scalenohedron
"This is bounded by eight scalene triangesl and has the indices{hkl}. It may be considered as the hemihedral…
Orthorhombic Bipyramids
"This is the general form and is bounded by eight scalene triangles." -The Encyclopedia Britannica 1910
Orthorhombic Bipyramids
"This is the general form and is bounded by eight scalene triangles." -The Encyclopedia Britannica 1910
Orthorhombic Bisphenoid
"general form...bounded by four scalene triangles." -The Encyclopedia Britannica 1910
Scalenohedron
"...bounded by twelve scalene triangles, and with the general indices {hkl}." -The Encyclopedia Britannica…
Dihexagonal Bipyramid
"...bounded by twenty-four scalene triangles...This form may be considered as a combination of two scalenohedra,…
Using Proportions To Find Heights of Trees
Triangle diagram for measuring heights of trees using proportions.
Using Proportions To Find Heights of Trees
Triangle diagram for measuring heights of trees using proportions
Area of Triangle
Parallelogram illustration to show where the area of a triangle formula comes from.
Pentagon With Triangular Sections For Area
Pentagon with dimensions labeled. Pentagon can be used to calculate area by calculating individual triangles…
Triangle 28, 36, 40
Triangle with sides labeled with numerals 28, 36, 40 and angles A, B, C labeled.
Pythagorean Theorem Triangle
Right triangle with squares that can be used to illustrate the Pythagorean Theorem.
Similar Triangles for Distance Across Stream
Illustration of similar triangles used to find distance across a stream