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WAEC - Mathematics (2009 - No. 37)
In the diagram, IG is parallel to JE, JEF = 120
o
and FHG = 130
o
, fins the angle marked t
40
o
70
o
80
o
100
o
解释
Now, t + 60
o
+ 50
o
= 180
o
t = 180
o
- 110
o
t = 70
o
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