Circle Orthogonal to a Given Circle

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Circle Orthogonal to a Given Circle

For circles with centres $$O_1,O_2$$, radii $$r_1,r_2$$ and:

$$O_1O_2=d$$

orthogonality requires:

$$d^2=r_1^2+r_2^2$$

Usage

- Used to impose the condition that two circles intersect at right angles.

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