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Help on this question?
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Help on this question?

Help on this question?-example-1
User Coin Cheung
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1 Answer

10 votes

Answer:

  • x = 9°
  • 8x = 72°
  • 12x = 108°

Explanation:

Where a transversal crosses parallel lines, consecutive exterior angles are supplementary:

8x +12x = 180°

20x = 180° . . . . . . . collect terms

x = 9° . . . . . . . . . divide by 20

8x = 8(9°) = 72°

12x = 12(9°) = 108°

User Miantian
by
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