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How do you do these questions 1-7??

How do you do these questions 1-7??-example-1
User Sizzle
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1 Answer

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angle 1=12 degrees
angle 2=78 degrees
angle 3=12 degrees
angle 4=78 degrees
angle 5=22 degrees
angle 6=78 degrees
angle 7=12 degrees
User Doz
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