equilateral angle
71Isocaèdre — Icosaèdre Icosaèdre Type Polyèdre régulier Faces Triangle Éléments :  · Faces  · Arêtes  · Sommets  · Caractéristique   20 30 12 2 Faces par sommet 5 Sommets par face …
72Gothic architecture — See also: Gothic art The western façade of Reims Cathedral, France …
73Quadrilateral — This article is about four sided mathematical shapes. For other uses, see Quadrilateral (disambiguation). Quadrilateral Six different types of quadrilaterals Edges and vertices 4 …
74Screw thread — Internal and external threads illustrated using a common nut and bolt. The screw and nut pair can be used to convert torque into linear force. As the screw (or bolt) is rotated, the screw moves along its axis through the fixed nut, or the non… …
75square — squarable, adj. squarelike, adj. squareness, n. squarer, n. /skwair/, n., v., squared, squaring, adj., squarer, squarest, adv. n. 1. a rectangle having all four sides of equal length …
76Koch snowflake — The first four iterations of the Koch snowflake The first seven iterations in animation …
77Morley's trisector theorem — In plane geometry, Morley s trisector theorem states that in any triangle, the three points of intersection of the adjacent angle trisectors form an equilateral triangle, called the Morley triangle. The theorem was discovered in 1899 by Anglo… …
78Hexagonal lattice — The hexagonal lattice or equilateral triangular lattice is one of the five 2D lattice types.Three nearby points form an equilateral triangle. In images four orientations of such a triangle are by far the most common. They can conveniently be… …
79Sonobe — Examples of modular origami made up of Sonobe units: an augmented icosahedron and an augmented octahedron, which require 30 and 12 units, respectively. The Sonobe module is a unit used to build modular origami, created by Mitsunobu Sonobe. Each… …
80Square root of 3 — List of numbers – Irrational and suspected irrational numbers γ – ζ(3) – √2 – √3 – √5 – φ – ρ – δS – α – e – π – δ Binary 1.1011101101100111101... Decimal …
