Electrons, like all physical objects in the real world, are 3 dimensional (or 4 dimensional if you include time, as Einstein does). Two dimensional objects with zero thickness exist only as mathematical abstractions.
3-dimensional
3-dimensional
2
The net of a 2 dimensional shape can be folded into a 3 dimensional shape
Although they do stand for dimensions, the word together is 2-Dimensional and 3-Dimensional not just Dimensions.
No. A polygon is a 2-dimensional figure. A polyhedron is 3-dimensional.
3-dimensional, if it's in real life. If it's merely a picture, then it's a 2-dimensional object depicting something that's 3-dimensional.
No
Volume is 3 dimensional, and Area is 2 dimensional.
No, a tv is a 3-dimensional object. A pair of parallel lines are 1-dimensional objects in a 2-dimensional plane.No, a tv is a 3-dimensional object. A pair of parallel lines are 1-dimensional objects in a 2-dimensional plane.No, a tv is a 3-dimensional object. A pair of parallel lines are 1-dimensional objects in a 2-dimensional plane.No, a tv is a 3-dimensional object. A pair of parallel lines are 1-dimensional objects in a 2-dimensional plane.
A plane figure is 2-dimensional.
2 dimensional figures just have width and length, if you were to add the height dimension it would become 3 dimensional.