HL Maths 2005 (C) Vectors

lc2010 · 12-06-2010 9:06am #1

Don't really understand how this is done, I think it's because I'm not really sure what a circumcentre is!!! Is it a point which is of equal distance from each oft the 3 angles???

Thanks!:p

EDIT: ITS 2006 SORRY!!!!

EuropeanSon · 12-06-2010 9:21am

The circumcentre is the point where you can draw a circle which passes through the three vertices of the triangle (the three "points" of the triangle)

Edit: it's the centre of that circle.

lc2010 · 12-06-2010 9:33am

EuropeanSon wrote: »

The circumcentre is the point where you can draw a circle which passes through the three vertices of the triangle (the three "points" of the triangle)

Edit: it's the centre of that circle.

Thanks!;)

Therefore it's equal distance from each vertex yeah?

EuropeanSon · 12-06-2010 9:52am

As far as I know it's the point of intersection of the perpendicular bisectors of the sides, ie. the lines at right angles to the sides which split the sides in two.

EuropeanSon · 12-06-2010 9:55am

Checked my book, yeah, my last post was correct. Text & tests 4 page 90/91 explains all those, if that's the book you've got.

HL Maths 2005 (C) Vectors

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