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in the following figure angle abd=3 angle dab and angle bdc= 120 degree find angle abd
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90 degree
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Step-by-step explanation:
let angle DAB=x
then angle ABD=3x
Angle ADB + 120 = 180
Angle ADB = 180-120
Angle ADB= 60
x + 3x + 60 = 180
4x +60= 180
4x = 180-60
4x = 120
x= 120/4
x=30degree
Angle ABD= 3x = 3*30= 90 degree
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