Circles Worksheet

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ACCEL. PRE-CALCULUS/TRIG 3
Name:_________________________________ Date:_____________
A circle is the set of all points a given distance from a fixed point.
_________________: the fixed point
_________________: the given distance
concentric circles:
same _______________, different _______________
Circle with center at ________________
P(x,y)
_______________________: standard form for a circle with a
center at the _______________.
Circle with center at ________________
P(x,y)
_______________________________: standard form for a circle with
radius (___) and center at _________.
Write the standard form of each equation.
Example: center: (3,4); radius: 7
1) center: (-5, 1); radius: 11
2) center: (0,0); radius: 8
3) center: (0, -7); radius: 5
4) Write the equation of a circle in standard form that passes through (1, -2) and center at (-3, -5).
Now, graph the above equation on the calculator.

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