Because they are both 3 dimensional
A rectangle is a 2-dimensional (plane) object while a cuboid is 3-dimensional (solid).
solid shapes are 3-D
A 3-dimensional figure. It need not be solid since it could be a curve in 3-d space.A 3-dimensional figure. It need not be solid since it could be a curve in 3-d space.A 3-dimensional figure. It need not be solid since it could be a curve in 3-d space.A 3-dimensional figure. It need not be solid since it could be a curve in 3-d space.
A 2-dimensional (plane) projection of a 3-dimensional (solid) figure. Or, for polyhedra it could be a net but that answer would not be applicable to many 3-d figures.
When a 3-dimensional (solid) object is cut by a plane, the 2-dimensional shape made where the solid object and the plane meet is the cross section.
solid geometry deals with 3 dimensional figures while plane geometry deals with 2 dimensional.
Because they are both 3 dimensional
No. Solid geometry is 3 dimensional. Plane geometry is 2 dimensional.
No. A polygon is a plane figure - i.e. it is 2-dimensional A cone is a solid figure - i.e it is 3-dimensional
A rectangle is a 2-dimensional (plane) object while a cuboid is 3-dimensional (solid).
Rectangles are plane (2-dimensional) polygons. Only solid (3-dimensional) polyhedrons have faces.
solid shapes are 3-D
A plane figure is 2 dimensional, theoretically has no depth and is used in proofs and calculations, ie trig problems. A solid has 3 dimensions
A 3-dimensional figure. It need not be solid since it could be a curve in 3-d space.A 3-dimensional figure. It need not be solid since it could be a curve in 3-d space.A 3-dimensional figure. It need not be solid since it could be a curve in 3-d space.A 3-dimensional figure. It need not be solid since it could be a curve in 3-d space.
A 2-dimensional (plane) projection of a 3-dimensional (solid) figure. Or, for polyhedra it could be a net but that answer would not be applicable to many 3-d figures.
Anything 3 dimensional is solid.