Q. 33.6( 9 Votes )

An exterior angle of a triangle is equal to 100° and two interior opposite angles are equal, each of these angles is equal to
A. 75°

B. 80°

C. 40°

D. 50°

Answer :

Let, 1 and 2 be two opposite interior angles and 3 be exterior angle.

According to question,


1 + 2 = 3


1 + 1 = 100o


21 = 100o


1 = 50o


Therefore, 1 = 2 = 50o


Thus, of these angles is equal to 50o.

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