An edge is the the answer
A vertex is the name of a corner on a solid where three or more faces meet (plural = vertices).
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a rectangular pyramid and a square pyramid
A polyhedron is a solid figure with many plane faces, typically more than six.
A vertex is the point where three or more edges of a solid figure meet.
an edge or in more simpler term "side"
In geometry and trigonometry, an angle (in full, plane angle) is the figure formed by two rays sharing a common endpoint, called the vertex or vertex of the angle (vertices in plural).With solid figures, like pyramids or polyhedrons, a vertex is a corner where three or more of the faces meet.Remember,* faces are the flat sides.* Edges are the lines where two of the faces meet.* Vertices are the corners where three or more of the faces meet.
A hexagonal pyramid.
It could be a pyramid shape
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A hexahedron in the form of a hpae with six quadrilateral faces. Somewhat more regular versions are a rhombohedron, a parallelepiped or a cuboid with the cube being the regular version.
This is a general description of an oblique prism. Use the link to learn more.
A face, of a solid object, is a flat surface. If it is curved it is called a curved surface though sometimes it is also referred to as a face. Two faces meet at an edge, which is a line which may be straight or curved. Three or more faces meet at a point which is a vertex.
In a 3-dimensional shape with polygonal faces, an edge is a straight line at which two faces meet. A vertex is a point where three or more edges meet. In solid shapes which are not polyhedra, an edge is still a line - possibly curved - where two faces meet. But a vertex can be any corner, for example, the point of a cone.
A triangular based pyramid has only 4 faces.
It's the adjective form of the word polyhedron, which means a solid figure with many plane faces, typically more than six.