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10 cards from this deck
x2+y2=r2x^2 + y^2 = r^2x2+y2=r2
(a,b)(a, b)(a,b)
rrr (positive only)
[a−r,a+r][a - r, a + r][a−r,a+r]
[b−r,b+r][b - r, b + r][b−r,b+r]
x2+y2+ax+by+c=0x^2 + y^2 + ax + by + c = 0x2+y2+ax+by+c=0
Complete the square for xxx and yyy terms
Radius is a distance (always positive scalar)
Circle moves right
Circle moves up
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