# 2. Find the value of the unknown interior angle $\small x$ in the following figures:

P Pankaj Sanodiya

As we know that the exterior angle is equal to the sum of the opposite internal angles. So,

i) $60^0+x=120^0\Rightarrow x=120^0-60^0=60^0$

ii) $70^0+x=100^0\Rightarrow x=100^0-70^0=30^0$

iii) $x+90^0=125^0\Rightarrow x=125^0-90^0=35^0$

iv) $x+60^0=120^0\Rightarrow x=120^0-60^0=60^0$

v) $x+30^0=80^0\Rightarrow x=80^0-30^0=50^0$

vi) $x+35^0=75^0\Rightarrow 75^0-35^0=40^0$

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