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Does a tetrahedron have any right angles?
No. A right angle would be 90 degrees; a tetrahedron is composed of four equilateral triangles, which by definition have equal angles of 60 degrees apiece.* * * * *Wrong!A tetrahedron is a solid shape enclosed by any four triangles. Only a regular tetrahedron that requires equilateral triangles. So an ordinary tetrahedron can have right angles - up to 3 of them at one vertex.
What is the fewest number of triangles that make up a trapezoid?
The fewest number of triangles that make up a trapezoid are two isosceles triangles.
What are the 5 basic polyhedrons?
Tetrahedron (4 triangles, like a pyramid design with a triangular base) Cube Octahedron (8 triangles - like two pyramids stuck together at the base, one going up and one going down) Icosahedron (20 triangles) Dodecahedron (12 pentagons)
What kind of triangles make up the faces of a triangular hexahedron?
They can be any kind of triangles.
How do you make a quadrilateral out of four equilateral triangles?
Put the triangles in a line alternately pointing up and down.
