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Corollary proof

dovahkiin · 2012-02-22 18:25:22

Iv'e heard your sometimes asked to prove corollaries, in my book I have Corollary 6: If two Circles intersect at one point only, then the two centres and the point of contact are colinnear. It has no other mentions of this at all, how do I prove this?

22-02-2012 7:25pm

#1

dovahkiin

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Iv'e heard your sometimes asked to prove corollaries, in my book I have Corollary 6: If two Circles intersect at one point only, then the two centres and the point of contact are colinnear.

It has no other mentions of this at all, how do I prove this?

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#2 22-02-2012 8:12pm

MathsManiac

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I don't know that you really need to be able to prove it, but you'll find a proof on page 66 of the syllabus document (and will need to refer to page 65 also).

The syllabus is here: http://www.ncca.ie/en/Curriculum_and_Assessment/Post-Primary_Education/Project_Maths/Syllabuses_and_Assessment/LC_Maths_for_examination_in_2012.pdf

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