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10 cards from this deck
Set of points equidistant from a fixed centre point
x2+y2=r2x^2 + y^2 = r^2x2+y2=r2
Pythagoras' theorem
(pmr,0)(pm r, 0)(pmr,0)
(0,pmr)(0, pm r)(0,pmr)
y=sqrtr2−x2y = sqrt{r^2 - x^2}y=sqrtr2−x2
y=−sqrtr2−x2y = -sqrt{r^2 - x^2}y=−sqrtr2−x2
x=sqrtr2−y2x = sqrt{r^2 - y^2}x=sqrtr2−y2
x=−sqrtr2−y2x = -sqrt{r^2 - y^2}x=−sqrtr2−y2
Half of a circle
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