Tetrahedron - Wikipedia
Tetrahedron. In geometry, a tetrahedron (pl.: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertices. The tetrahedron is the simplest of all the ordinary convex polyhedra.
Tetraedru - Wikipedia
Tetraedrul este un poliedru alcătuit din patru fețe triunghiulare, oricare trei dintre ele intersectându-se într-unul din cele patru vârfuri. Tetraedrul este cel mai simplu tip de piramidă, la care baza este un triunghi, de aceea mai este denumit și piramidă triunghiulară.
Volume and Area of a Tetrahedron – Formula and Examples
A tetrahedron is a regular pyramid that has four triangular faces. This means that we can calculate its volume by multiplying the area of its base by the height of the tetrahedron and dividing by three. Also, its surface area is calculated by adding the areas of the four triangular faces.
Trigonometry of a tetrahedron - Wikipedia
By construction, is a parallelogram and thus and are congruent triangles. Thus, the tetrahedron and are equal in volume. As a consequence, the quantity is equal to the altitude from the point to the face of the tetrahedron ; this is shown by translation of the line segment .
Tetrahedron | geometry | Britannica
In R. Buckminster Fuller: Life. …of this system is the tetrahedron (a pyramid shape with four sides, including the base), which, in combination with octahedrons (eight-sided shapes), forms the most economic space-filling structures.
Tetrahedron Volume Calculator
Jun 19, 2024 · Table of contents. The tetrahedron volume calculator determines the volume and surface area of a tetrahedron. In addition to this, the calculator will also help you find other properties such as the height of tetrahedron, surface area to volume ratio, sizes of various spheres like insphere, midsphere, and circumsphere.
Tetraedrul (descriere și desfășurare) | Lectii Virtuale
Tetraedrul este un corp geometric determinat de patru puncte necoplanare. Elementele unui tetraedru: 4 vârfuri: punctele A, B, C, D. 6 muchii: segmentele [AB], [AC], [AD], [BC], [BD], [CD] 4 fețe (cele 4 triunghiuri formate).
Tetraedrul regulat - RO - YouTube
In acest scurt videoclip vei afla ce este un tetraedru regulat si cum se calculeaza aria si volumul sau, dar si la ce te poate ajuta acest lucru in situatii ...
Tetraedrul regulat - Mate
Apr 5, 2008 · TETRAEDRUL REGULAT Fiind o piramida triunghiulara regulata, toate formulele piramidei triunghiulare regulate sunt valabile si la tetraedrul regulat. Toate cele 4 fete sunt triunghiuri echilaterale. Formule specifice: m=l ; ; ; Download.
Tetraedru - Wikiwand
Tetraedrul este un poliedru alcătuit din patru fețe triunghiulare, oricare trei dintre ele intersectându-se într-unul din cele patru vârfuri. Tetraedrul este cel mai simplu tip de piramidă, la care baza este un triunghi, de aceea mai este denumit și piramidă triunghiulară. Mai multe informații Descriere, Tip ...
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