Question

Please answer my question

Answer 1

(a) The sum of all angles of triangle is 180°.
so 180-(50+70) = 180-120=60.
so measure of third angle of triangle is 60°.
Value of x is 180-60=120°......{angles in linear pair}

(b) As from above , 180-(65+45)=180-110=70°
so measure of third angle of∆ is 70°.
Value of x is 180 -70 = 110° .....{angles in linear pair}
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Answer 2

a.x=50+70

x =120

because exterior angle=sum of opposite angles

b.x=65+45

x=110