RosalinaL236249 RosalinaL236249

28-10-2022
Mathematics

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can someone please help me with this I don't understand it and if possible could you write out the formula for me so I can get a better understanding.

can someone please help me with this I dont understand it and if possible could you write out the formula for me so I can get a better understanding class=

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AlazarI69038 AlazarI69038

28-10-2022

m∡DCE = 100º

1) Since ∡DCG = ∡DCE + ∡ECF +∡FCG, by the angle addition postulate we can write:

∡DCG = ∡DCE + ∡ECF +∡FCG

145º = ∡DCE +20º +25º Let's solve for ∡DCE

145º -45º =∡DCE

∡DCE = 100º

2) So the m∡DCE = 100º

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