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Papessa [141]
3 years ago
15

Please help me on these questions and explain it thanks

Mathematics
1 answer:
Korolek [52]3 years ago
6 0
ABC = 180-120=60
ACB = 180-(40+60)=80
Therefore ECD= 80 as ACB and ECD are vertically opposite angles

the solution is A as that is where the graphs intersect each other
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