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Question

Question 1
In the given figure, lines AB and CD intersect at O. if AOC+BOE=70 and BOD=40, find BOE and reflex COE.

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Solution

AB is straight line, rays OC and OE stand on it.
AOC+COE+BOE=180
(AOC+BOE)+COE=180
70+COE=180
COE=18070=110
Reflex COE=360110=250
CD is a straight line, rays OE and OB stand on it.
COE+BOE+BOD=180
110+BOE+40=180
BOE=180150=30

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