10. What is x in the figure?
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Answered by
6
Answer:
100 + a = 180 (linear pair)
a = 180 - 100
a = 80
a + 60 = x (exterior angle)
80 + 60 = x
x = 140
Answered by
4
Answer:
the upper angle is 180°-100°=80°
x=sum of two opposite interior angles
x=60°+80°=140°
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