triangle

area

area of triangle $A = \frac{1}{2} \cdot b \cdot h$

asterism

Summer Triangle

charts

constellations

diagrams

emoji

🚩
🔺
🔻

flags

fractal

Sierpiński triangle

generative work

4th dimension

path on GitHub

https://github.com/davepinch/pinchy.cc/blob/master/content/topics/mathematics/shapes/triangle/triangle.md

photographs

random

Matthew 5:39

sides

3

tagged

acute triangle
equilateral triangle
isosceles triangle
obtuse triangle
right triangle
scalene triangle
Euler is credited for popularizing the Greek letter π (lowercase pi) to denote the ratio of a circle’s circumference to its diameter, as well as first using the notation f(x) for the value of a function, the letter i to express the imaginary unit √-1, the Greek letter Σ (capital sigma) to express summations, the Greek letter Δ (capital delta) for finite differences, and lowercase letters to represent the sides of a triangle while representing the angles as capital letters.

tags

Wikidata

https://www.wikidata.org/wiki/Q19821

Wikipedia

Triangle (Wikipedia) A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted △ABC.

➕ side

quadrilateral

➖ side

digon