Answer / prasant

When two base classes have no overlapping properties or
methods they are said to be orthogonal to each other. A
class can be derived from these two base classes with no
difficulty.

Answer / harendra pal

If two base classes have no overlapping methods or data they are said to be independent of, or orthogonal to each other. Orthogonal in the sense means that two classes operate in different dimensions and do not interfere with each other in any way. The same derived class may inherit such classes with no difficulty.

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