spikegangjuan spikegangjuan

22-01-2018
Mathematics

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Suppose ΔΔCED ≅≅ ΔΔDBC. If m∠∠EDC = 630 and m∠∠DBC = 820, what is m∠∠DCE

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yellowyarn2003 yellowyarn2003

22-01-2018

63+82+m∠DCE=180
145+m∠DCE=180
m∠DCE=35

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