in 2D, a heptagon in 3D, a heptahedron
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A pentagonal prism
A solid figure with twenty faces is called an Icosahedron.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges. 15 edges
Isosceles TetrahedronA solid with four faces is a tetrahedron. Each of the faces is a triangle. If all the triangles are congruent, you have an isosceles tetrahedron.
It is a prismoid - a prism-like solid whose lateral faces are not perpendicular to the bases.It is a prismoid - a prism-like solid whose lateral faces are not perpendicular to the bases.It is a prismoid - a prism-like solid whose lateral faces are not perpendicular to the bases.It is a prismoid - a prism-like solid whose lateral faces are not perpendicular to the bases.