Hi!

I attach a file here with a question and suggested solution. All is fine, except I would like to know how there is a sign change on |BE|^2 from the first line to the second line.

Thanks in advance for your help.

Josh

Printable View

- August 12th 2013, 05:32 PMredskiesEuclidean Geometry Question
Hi!

I attach a file here with a question and suggested solution. All is fine, except I would like to know how there is a sign change on |BE|^2 from the first line to the second line.

Thanks in advance for your help.

Josh - August 13th 2013, 02:04 AMChessTalRe: Euclidean Geometry Question
- August 13th 2013, 08:02 AMredskiesRe: Euclidean Geometry Question
Is it really a mistake??.....The creator of the solution is generally not a mistake-maker.Thanks ChessTal for the reply....Is there any way that the sign could be changed for some reason we are missing?

- August 13th 2013, 10:40 AMChessTalRe: Euclidean Geometry Question
- August 13th 2013, 01:18 PMBobPRe: Euclidean Geometry Question
It's just a slip of the pen, the sign should be negative.

However, it would seem that you have not even noticed the main mistake, (which happens on the fourth line).