The triangular pyramid has.
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A tetrahedron, also called a pyramid is a three-dimensional shape with four faces.
A hypercube is a four dimensional figure.
A cube has six square faces. A cuboid also has six faces but 4 or 6 or them may be rectangles.
A triangular based pyramid has 4 faces and 4 vertices
The base word for a many sided figure is polygon.All four sided polygons are called quadrilateralThe sub groups of planar (2 dimensional) quadrilaterals are:-rectangle (a special kind of parallelogram)square (a special kind of rectangle (rhomboid))trapeziumrhombus (an equilateral quadrangle which must also be a parallelogram)parallelogramThese are also called quadrangles (as they have four angles as well as four sides).A three dimensional shape with four faces (surfaces) is called a tetragonTetragons have six edges and four vertexes, each where three edges and three faces meet. A triangular pyramid is a tetragon. it is the simplest three dimensional shape.