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it is so because its vertices's and faces are swapped among it only.

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Q: Why is a tetrahedron's dual its self?
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Related questions

Is it possible for 2 dual tetrahedrons to interlock and create an octahedron?

go to your local game shop and ask for a d8


What is self dual logic function?

A self-dual logic function is a function that is identical to its dual


What is a self dual polyhedron?

For every polyhedron, there is a dual which is a polyhedron that has:a face where the first had a vertex,a vertex where the first had a face,the same number of edges.A self-dual polyhedron is a polyhedron whose dual is the same shape.All pyramids, for example, are self-dual.


Is there tetrahedrons in the real world?

yes


Who has 4 sides?

Tetrahedrons and quadrilaterals.


Where did tetrahedrons come from?

Tetrahedrons are triangular based pyramids that have 4 faces, 6 edges and 4 vertices which were built by the ancient Egyptians.


What are tetrahedrons?

Tetrahedrons are 4-sided solids. A regular tetrahedron is the equilateral pyramid, having one pyramid as the base and three others the sides.


What are all the four sided polyhedrons?

tetrahedrons


What is readily form silica tetrahedrons?

polymorphs


What makes tetrahedrons so strong?

good question


How many verticals has a tetrahedrons have?

tetra means four.


What is two tetrahedrons stuck together called?

Two regular tetrahedrons connected face to face make a "regular triangular dipyramid." That is one of the 92 "Johnson solids." Those are the convex polyhedrons whose faces are regular polygons but do not belong to either of the two sets of highly symmetric polyhedrons (the Platonic and the Archimedean) or to the perhaps less interesting two infinite families of prisms and antiprisms. If the two tetrahedrons overlap, both centers at the same place but with the tetrahedrons facing in opposite directions, it makes a "stellated octahedron."