I suppose you could refer to a two-dimensional array as a rectangular or square array (or as a jagged array of not all arrays within a given dimension have the same size). Table, grid or matrix may also be good synonyms for two-dimensional array, subject to the problem domain addressed with the algorithm.
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You go through all the elements of an array with a loop - or, in the case of a 2-dimensional array, with two nested loops. If you have a 10-dimensional array, you would use 10 nested loops. In any case, one variable to keep track of the position for each dimension.
when a two dimensional object is transformed by either translation,rotation,scaling,shearing etc on a plane ,it is called two dimensional transformation..
rhombus
a 2d shape A two dimensional figure can also be called a plane figure since it can be drawn in the two dimensional plane. Some examples include the triangle, the square, the circle, the pentagon, the hexagon, the parallelogram, the rhombus, etc.
A two-dimensional object is an object that can be drawn on a flat sheet of paper. It's called "two-dimensional" because it has 2 dimensions . . . length and width, but no height.