General Math Term, if two objects are *orthogonal*, then they are $90\degree$ apart in some sense. The more generalized notation of orthogonality between two objects in some [[Vector Space]] $V$ is that two elements $A,B\in V$ are considered orthogonal [[Biconditional|if and only if]] their [[Inner Product]] is equal to $0$. $\huge A \perp B \iff \braket{A,B} = 0 $