Geometry ( easy level)?
The exercise of the following list http://pt.scribd.com/doc/3672318/Matematica-Curso-... is resolved in this list http://pt.scribd.com/doc/3672321/Matematica-Curso-...
I didnt understand why the angle M is equal to the angle N (wich is alpha) .
Can someone explain ? thanks in advance.
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Triangle LMP is an isosceles triangle, therefore angles M and N are both alpha.