Assuming you mean a pentagon - not penagon, a 3-dimensional pentagon is a dodecahedron which has 12 faces.
Three pairs.
A two dimensional shape would have 17 sides. For a three dimensional shape - assuming that sides are faces - the answer depends on the shape itself.
2 dimensional (plane) figures can have three or more straight edges as sides. 3 dimensional (solid) figures can have four or more plane sides (faces). They can have fewer sides if the sides are not straight.
An icosagon is a two-dimensional polygon, not a three-dimensional figure. An icosagon has 20 sides - while an icosahedron has 20 faces.
A sphere is a round object. It has no sides. The object is 3-D. (Three Dimensional)
5 sides
A pentagon has 5 sides.
it has 5 sides and 5 angles
Three pairs.
2-dimensional shapes, with three straight sides have three vertices.
there are 6 sides : top and bottom = 2 + 4 sides = 6
A two dimensional shape would have 17 sides. For a three dimensional shape - assuming that sides are faces - the answer depends on the shape itself.
2 dimensional (plane) figures can have three or more straight edges as sides. 3 dimensional (solid) figures can have four or more plane sides (faces). They can have fewer sides if the sides are not straight.
A triangle is not a polyhedron. A triangle is a two-dimensional figure, and a polyhedron is a three-dimensional solid. An example of a triangular-shaped polyhedron is a pyramid.
Many kites have four sides, like quadrilaterals. However, quadrilaterals are two-dimensional figures; kites are three-dimensional.
An icosagon is a two-dimensional polygon, not a three-dimensional figure. An icosagon has 20 sides - while an icosahedron has 20 faces.
A sphere is a round object. It has no sides. The object is 3-D. (Three Dimensional)