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Browse High School Coordinate Plane Geometry

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Where Will the Runners Meet? [03/29/1999]
Two runners, A and B, start 90 degrees away from each other on a circular track and run at the same speed. If Runner B decides to cut across the track, where will they meet?

Why Does dxdy = rdrd(theta)? Why Not Just drd(theta)? [12/29/2009]
In transforming from rectangular form to polar form, I have always memorized dxdy = rdrd(theta) without understanding it....

Why Use h and k for the Center of a Circle? [05/09/2000]
Why are k and h used in the equation (x-h)^2 + (y-k)^2 = 0 for a circle with center (h,k)? Why not j and f, etc.?

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