An icosahedron.
Well, any shape with a triangular face. I assume that you mean a shape that only has (identical) triangles for faces. There are 2: the tetrahedron with 4 triangles, and the icosahedron with 20 triangles. * * * * * What about a triangular dipyramid? Two triangular pyramids stuck together along one face?
the shape that can make two smaller triangles is parallelogram.
Dodecahedron. The 5 "Platonic Solids" are: Cube/ 6 square sides Tetrahedron/ 4 triangles Rhomboid/ 8 triangles Dodecahedron/ 12 pentagons Icosahedron/ 20 triangles
NOT POSSIBLEIt is not possible to put 20 isosceles triangles into the form of a square. It takes 2 isosceles triangles to make one square. 6 more isosceles triangles would have to be added before a larger square could be made.For an isosceles triangle with leg length x, the number of triangles needed to make a square is modeled by the equationN = 2 * x2where N is the number of triangles and x is the number of isosceles triangles touching any side of the square.There is no integer solution for x when N = 20, meaning it is not possible to arrange 20 isosceles triangles in the shape of a square.
a geometric shape made up of 20 triangles. :)
An Icosahedron.
duodecahedron is a 3D shape that has 20 triangles as it's base
An icosahedron.
Well, any shape with a triangular face. I assume that you mean a shape that only has (identical) triangles for faces. There are 2: the tetrahedron with 4 triangles, and the icosahedron with 20 triangles. * * * * * What about a triangular dipyramid? Two triangular pyramids stuck together along one face?
the shape that can make two smaller triangles is parallelogram.
Dodecahedron. The 5 "Platonic Solids" are: Cube/ 6 square sides Tetrahedron/ 4 triangles Rhomboid/ 8 triangles Dodecahedron/ 12 pentagons Icosahedron/ 20 triangles
An icosahedron is a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles. icos is Greek for 20
congruent triangles
NOT POSSIBLEIt is not possible to put 20 isosceles triangles into the form of a square. It takes 2 isosceles triangles to make one square. 6 more isosceles triangles would have to be added before a larger square could be made.For an isosceles triangle with leg length x, the number of triangles needed to make a square is modeled by the equationN = 2 * x2where N is the number of triangles and x is the number of isosceles triangles touching any side of the square.There is no integer solution for x when N = 20, meaning it is not possible to arrange 20 isosceles triangles in the shape of a square.
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.