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15 votes
Pls help no need for long explanations just a quick summary ​

Pls help no need for long explanations just a quick summary ​-example-1
User Rypel
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1 Answer

11 votes

Explanation:

Angle FAB = Angle BHC = 48° (Z-angles)

By Exterior Angle Theorem,

Angle ABC = Angle BHC + Angle ECB.

=> Angle ABC = 48° + 18° = 66°.

User Hieu
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