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Class 8 - (Math )
Geometry - Properties of parallel lines
line AB || Line CD. If ∠BAC = 40° and ∠ACD = 140°, then what is the angle of ∠ACD in the linear pair by property of linear pairs?
a :
40°
b :
140°
c :
180°
d :
90°
Explanation :
The sum of the angles in a linear pair is 180°. 180° - 140° = 40°