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a+b = 180° eq1
because angle a and b are linear
and it is given that
a-b =20 eq2
Adding eq 1 and 2 we get
2a = 200
a = 100°
now putting the value of a in eq 1 we get
100° + b = 180
b = 180° - 100°
b = 80°
hence a=100° and b = 80°
because angle a and b are linear
and it is given that
a-b =20 eq2
Adding eq 1 and 2 we get
2a = 200
a = 100°
now putting the value of a in eq 1 we get
100° + b = 180
b = 180° - 100°
b = 80°
hence a=100° and b = 80°
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