RodasZ63192 RodasZ63192

31-10-2022
Mathematics

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PaisynnH461525 PaisynnH461525

31-10-2022

[tex]\begin{gathered} \angle DEC+\angle EDC+\angle ECD=180^0(sum\text{ of interior angles in a triangle)} \\ 45^0+65^0+\angle ECD=180 \\ \angle ECD=180-45-65 \\ \angle ECD=70^0 \end{gathered}[/tex][tex]undefined[/tex]

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