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EXERCISE 6.1I. In Fig. o.13, lines AB and CD intersect at O. If C2 BOE and reflex Z COEFig. 6.13

Answer»

Aoc + boe = 70 givenbod = 40 aoc = bod =40 (vertically opposite angle)so aoc + boe = 70boe = 70-40=30aob = 180 ( linear pair)aoc+ coe+ boe = 18040 + coe +30 =180coe=180-70=110

now reflex coe reflex coe= 360coe= 110reflex coe = 360-coe360-110=250 ..



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