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Eukleidés VI.5 (Věta obrácená k uu)

Autore:Martin Vinkler

Heath:

If two triangles have their sides proportional, then the triangles are equiangular with the equal angles opposite the corresponding sides. http://aleph0.clarku.edu/~djoyce/java/elements/bookVI/propVI5.html

Školská formulace věty:

Důkaz věty obrácené k uu v duchu důkazu Eukleidova:

Důkaz -- video Sandy Bultena:

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