Mathematics, 03.11.2020 17:10 nguyenhoangthienkim0

In ΔBCD, B D ‾ BD is extended through point D to point E, D E = ( 9 x − 12 ) ∘ m∠CDE=(9x−12) ∘ , m ∠ B C D = ( 2 x + 3 ) ∘ m∠BCD=(2x+3) ∘ , and m ∠ D B C = ( 3 x + 5 ) ∘ m∠DBC=(3x+5) ∘ . Find m ∠ B C D . m∠BCD.

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In ΔBCD, B D ‾ BD is extended through point D to point E, D E = ( 9 x − 12 ) ∘ m∠CDE=(9x−12) ∘ , m ∠...

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