S :any curve O:any point (pole) A:any point (fixed
point)
any line through O meets S at point Q,
and points P,P' are marked on it such that QA=QP=QP' ,
the locus of P, P' is called the strophoid of S
with respect to the pole O and the fixed point A
Draw the right strophoid by definition:
strophoid of a straight line with respect a pole not on the
line and fixed point is the perpendicular from the pole to the line
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ÂIP,P'ªºy¸ñ
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Draw the right strophoid by another method
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Draw the right strophoid as a cissoid
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Right Strophoid as envelope of circles
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Tangent of Right Strophoid
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