Re: [Math4u] Re: circles

Better, The angle between the tangents drawn to the circles at a point of intersection is 90 degrees or pi/2 radians.  There are three different words used in English to indicate that geometric figures intersect with an angle of pi/2 radians (90 degrees) between their tangents.  If the geometric figures are themselves straight lines, then perpendicular is used, if one is a straight line and one is a curve, then the word normal is used, and if both are curves, then orthogonal is used.

 

Buck Dick

RayKornele <raykornele@verizon.net> wrote:

--- In Math4u@yahoogroups.com, "basha_arya" <basha_arya@...> wrote:
>
> what is the meaning of orthogonal intersections of circles
>
Orthogonal means intersecting at right angles.
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