In figure given below,
Find the value of ∠1 +∠2.
190∘
∠1 and 72∘ & ∠2 and 98∘ form two pairs of linear pair of angles and their sum is 180∘.
Therefore,
∠ 1+72∘ =180∘
⇒∠ 1=108∘
Similarly,
∠ 2+98∘ =180∘
⇒∠ 2=82∘
So,
∠ 1+∠ 2=(108+82)∘ =190∘