Mathematics, 10.12.2020 22:30 jellydemara208

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 mZABE=126° as shown.
(a) What is the measure of ZDEB ? Justify.
I
E
D
F
ME
(b) What is the measure of ZDEC ? Justify.
126°
A
B
(c) What is the measure of ZBCE ? Justify.

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