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Problem In △ A B C \triangle ABC △ A B C D D D A B AB A B ∠ A C D = ∠ D B C \angle ACD = \angle DBC ∠ A C D = ∠ D B C ∠ A D C = ∠ D C B \angle ADC = \angle DCB ∠ A D C = ∠ D C B A D = 10 cm AD = 10\,\text{cm} A D = 10 cm B D = 9 cm BD = 9\,\text{cm} B D = 9 cm D C = 6 cm DC = 6\,\text{cm} D C = 6 cm B C BC B C 7.5 cm 7.5\,\text{cm} 7.5 cm 5.4 cm 5.4\,\text{cm} 5.4 cm 3.6 cm 3.6\,\text{cm} 3.6 cm 6.4 cm 6.4\,\text{cm} 6.4 cm Browse the problem library