13. In the figure, AOB and COD are straight lines. C.
(i) Find the value of x and of y.
(ii). Find obtuse AÔD and reflex CÔE.
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Step-by-step explanation:
6x+3y=180------ eq 1
34+186-4x+3y=180-------eq 2
Subtract eq 1 and 2
6x +3y-34-186-4y-3y=0
10x=220
x=22
substitute x in eq 1
3y=180-132
3y=48
y=16
AOD = 180-3y
180-48
132
COE= 180-(186-4x)
4x-6
88-6
82
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