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AB cut CD at O, OE=GO, OE/BE*BM/MD*DG/GO=1
Draw the line parallel to CD through B, intersect EG at K. Angles BEG = EGC = BKE . --> BE = BK , triangles BKM and DGM are similar. --> BE/DG = BK/DG = BM/DM
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AB cut CD at O, OE=GO, OE/BE*BM/MD*DG/GO=1
ReplyDeleteDraw the line parallel to CD through B, intersect EG at K. Angles BEG = EGC = BKE . --> BE = BK , triangles BKM and DGM are similar. --> BE/DG = BK/DG = BM/DM
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