What do you call two circles which cut ‘right ‘across each
other?
Answer:
Orthogonal: Orthogonal means ‘right – angled’. In other words pertaining to or
depending upon the use of right angles. If any curves cut at right angles, they
are said to intersect orthogonally.
Such curves are of interest in many branches of applied
mathematics. A point of interest about two circles cutting orthogonally is that
the square of the distance between the centers is equal to the sum of the
squares of their radii.
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