Find the value of ∠x in the following figure.
90∘
70∘
80∘
60∘
In the given figure ∠1+90∘=180∘ [Linear Pair] ∠1=90∘ Sum of exterior angles of a polygon is 360∘. ∴ x+60∘+90∘+90∘+40∘=360∘ x+280∘=360∘ x=80∘