The Tetrahedron (Leaving Cert DCG): Flashcards
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10 cards from this deck
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Practise the cards
10 cards from this deck
Definition of a tetrahedron
Definition of a tetrahedron
The simplest 3D shape/polyhedron
No. of faces on a tetrahedron
No. of faces on a tetrahedron
4 faces
No. of vertices on a tetrahedron
No. of vertices on a tetrahedron
4 vertices
No. of edges on a tetrahedron
No. of edges on a tetrahedron
6 edges
Type of faces on a regular tetrahedron
Type of faces on a regular tetrahedron
Equilateral triangles
Special property: tetrahedron duality
Special property: tetrahedron duality
Self-dual
What self-duality creates in a tetrahedron
What self-duality creates in a tetrahedron
Identical tetrahedron by connecting face centres
Where inscribed sphere touches
Where inscribed sphere touches
All four triangular faces
Where circumscribed sphere passes through
Where circumscribed sphere passes through
All four vertices
Inscribed & circumscribed sphere centres
Inscribed & circumscribed sphere centres
Share the same centre point