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5 votes
Please help and explain

Please help and explain-example-1

1 Answer

1 vote

Answer:

∠ABD=150°

Explanation:

6c+12+51-c=178

5c=178-12-51

5c=178-63=115

c=115÷5=23

∠ABD=6c+12=6×23+12=138+12=150°

answered
User Ramy
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