Question

If the exterior angle of an isosceles triangle is 120degree and its interior opposite angles are equal, then each interior opposite angle is 
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Answer 1

Step-by-step explanation:

Interior opposite angles = ${x}$

Exterior Angle = 120°

Exterior Angle Property states that the sum of two interior opposite angles is the exterior angle.

${x}$ + ${x}$ = 120°

${2x}$ = 120°

${x}$ = $\frac{120}{2}$

${x}$ = 60°

Hence, the 2 interior opposite angles are 60°

Hope it helps

Answer 2

$\textsc{exterior \ angle = sum \ of \ opposite \ interior \ angles}$

$\textsc{let \ the \ interior \ equal \ opposite \ angles \ be \ x}$

$\textsc{exterior\ angle = 120}$°

$\textsc{x+x=120}$

$\textsc{2x = 120 \ then \ x = 120/2 = 60}$°

$\textsc{hope \ it\ helps\ !!}$