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Myndræn sönnun á hornasummu þríhyrnings
Author:
Gudny
,
ITfC-Edu-Team
Dragðu til punkt eða línu á myndinni og athugaðu hvað gerist. Getur þú útskýrt hvernig þessi mynd sannar í raun hornasummu þríhyrnings ? Athugaðu að línurnar E og G eru samsíða.
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