What do you notice about the opposite angles?
They are equal.[br]The rule:[br][b]Vertically opposite angles are equal[/b]
What would be the value of [math]\angle[/math]CEB?
If you would like more questions go to this link:[br]https://www.transum.org/Software/SW/Starter_of_the_day/Students/AnglePoints.asp?Level=3