learn.howToCalculate
learn.whatIsHeading
A regular tetrahedron is one of the five Platonic solids, consisting of four equilateral triangular faces. It is the simplest and most symmetric 3D shape with flat faces.
Formel
V = a³/(6√2); SA = √3 a²; h = a√(2/3)
- a
- edge length (length)
- V
- volume (length³)
- SA
- surface area (length²)
- h
- height (length)
Trin-for-trin guide
- 1Volume = a³/(6√2)
- 2Surface area = √3 × a²
- 3Height h = a√(2/3)
- 4Edge length a determines all dimensions
Løste eksempler
Input
Edge a = 6
Resultat
Volume ≈ 25.46, SA ≈ 62.35
Input
Edge a = 4
Resultat
Volume ≈ 7.54, SA ≈ 27.71
Ofte stillede spørgsmål
What is the simplest 3D shape?
The tetrahedron (4 triangular faces) is the simplest 3D polyhedron, just as the triangle is the simplest 2D polygon.
How many vertices, edges, and faces does a tetrahedron have?
4 vertices, 6 edges, and 4 equilateral triangular faces.
Is a tetrahedron the same as a triangular pyramid?
Yes, a regular tetrahedron is a specific type of triangular pyramid where all four faces are equilateral triangles.
Klar til at beregne? Prøv den gratis Tetrahedron-beregner
Prøv det selv →