they are: ---sided pyramids and triangular prisms and 20 sided 3d shapes
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Pyramid.
Some polyhedra with 24 faces include:A triaugmented dodecahedron, which consists of 15 triangular faces and 9 pentagonal faces.A disphenocingulum, which consists of 20 triangular faces and 4 quadrilateral faces.A triakis octahedron, which consists of 24 triangular faces.A tetrakis hexahedron, otherwise known as a disdyakis cube, which consists of 24 triangular faces - the appearance of a cube on the inside, with six pyramidal faces on each cubic face.A trapezoidal icositetrahedron, which consists of 24 quadrilateral faces.And a pentagonal icositetrahedron, which consists of 24 pentagonal faces.
Of some shape, Yes. Of other shapes, No.
Some shapes do not have any lines of symmetry. These shapes are called asymmetrical. It doesn't matter how you fold an asymmetrical shape--the two halves just won't match!
a cuboid * * * * * A prism, of which, a cuboid is a special case.