What are the parameteric coordinates of closed loops generated by intersection point F between b and c and intersection point I between a and c extensions in a quadrilateral of sides a,b,c,d ( side a smallest,side d largest, angle th variable/parameter between a and d )? These occur in a four bar linkage mechanism . The book "4 Bar Atlas"(by Hrones and Nelson) does not include parameteric equations. TIA.
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20 years ago