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Mathematics, 05.08.2020 02:01 ana9340
Roberto is x years older than his only sister but 10 years ago he was twice her age. What are the current ages of the siblings?
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Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.
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Roberto is x years older than his only sister but 10 years ago he was twice her age. What are the cu...
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