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Rechner auf Deutsch: Regelmäßige geometrische Körper. Home Calculators in English: Regular geometric shapes.
2D: Kreis || Gleichseitiges Dreieck | Quadrat | Fünfeck | Sechseck | Achteck
3D: Kugel || Tetraeder | Würfel | Oktaeder | Dodekaeder | Ikosaeder		 2D: Circle || Equilateral Triangle | Square | Pentagon | Hexagon | Octagon
3D: Sphere || Tetrahedron | Cube | Octahedron | Dodecahedron | Icosahedron
Andere Körper: Dreieck | Rechteck || Zylinder | Kegel | Quader | Pyramide Other shapes: Triangle | Rectangle || Cylinder | Cone | Cuboid | Pyramid



Equilateral Triangle Calculator

Make calculations in an equilateral triangle. Enter one value and, when needed, change the number of decimal places. Then click Calculate.

Euclid Side length (a=b=c): Equilateral triangle
Height (h):
Perimeter (p):
Area (A):
Excircle radius (re):
Incircle radius (ri):
Round to    decimal places.



Formulas:
h = √3 / 2 * a
p = 3 * a
A = a² * √3 / 4
re = √3 / 3 * a
ri = √3 / 6 * a

Length, height, perimeter and radius have the same unit (e.g. meter), the area has this unit squared (e.g. square meter).



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