C2 coordinate geometry extension activity - a real challenge! Four circles with different tangents, points they go through and other data. Need to use intersecting chords to find centre of Circle D. Contains instructions (and answers on page 2).
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This is a cunning puzzle; three pieces of information are given about each of four circles but we aren't told what those groups of three are. The challenge is to deduce the circles' equations. This would be very useful as an end of unit revision exercise.
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