if exterior angle ACD of triangle ABC has the measure 120 degree one of two internal opposite angle of 40 degree find the measure of remaining angle ABC
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the exterior angle of a ∆ triangle is always equal sum of interor opposite angle it is a theorem known as exterior angle theorem
40°+x°=120°
x=120°-40°
x=80°
refer to the attachment for the diagram
hope helped
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maitri000:
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its wrong
how you can say it is wrong
if this ansawer is wrong so you only tell me what is right
by exterior angle theorm the exterior angle is equal to sum of two interior angle one angle is 40 degrees 120-40=60 so angle B is 60 degree 40 + 60 = 120 , 180 - 120 = 60 angle C is 6p
C=60
40 + 80 = 120 is it like that
no
ansawer me correct or not ansawer only me
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