8. In the diagram shown, line m is parallel to line n. They are crossed by transversals r and s. Finally,


8. In the diagram shown, line m is parallel to line n. They are crossed by transversals r and s.
Finally, r and s are perpendicular to each other.It is known that m   ABE 126 as shown.(a) What is the measure of DEB? Justify.(b) What is the measure of DEC ? Justify.(c) What is the measure of BCE ? Justify.​


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