Question

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Answer 1

Step-by-step explanation:

a) AOC + BOC = 180°

9x = 180°

x = 20

AOC = 4 * 20 = 80°

b) 100° From above

c) 80° linear pair

d) 100° linear pair

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Answer 2

Answer:

AOC = 80°

BOC = 100°

COD = 80° (Vertically Opposite Angle)

AOD = 100° (Vertically Opposite Angle)

Step-by-step explanation:

The figure is V.O.A. (Vertically Opposite Angle)

AOC + BOC = 180°

9x = 180°

x = 20°

AOC = 4 * 20 = 80°

Also, BOD = 80°

Then (360 - 80 * 80)° = 200°

Then, BOC = (200 / 2)° = 100°

Also, AOD = 100°

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