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Delta ABC और Delta DEF में ,AB =DE ,...

`Delta ABC ` और `Delta DEF` में ,AB =DE ,AB ।।DE ,BC =EF और BC ।। EF है। शीर्षो A , B और C को क्रमश : शीर्षो D , E और F से जोड़ा जाता है ( देखिए आक्रति 8.22)|दर्शाइए कि
(i) चतुर्भुज ABED एक समांतर चतुर्भुज है ।
(ii) चतुर्भुज BEFC एक समांतर चतुर्भुज है ।
(iii) `AD ||CF ` और `AD+CF` है ।
(iv) चतुर्भुज ACFD एक समांतर चतुर्भुज है ।
( v) `AC=DF`है |
`(vi) Delta ABC ~= Delta DEF` है |

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