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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