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1. 50° because 180 - (90 + 40) = 50 in ∆AOD where O is the point of intersection of diagonals.
2. Here (a) and (b) have an unique solution.
=> (a) and (c) also have an unique solution
=> (b) and (c) also have an unique solution
3. (c) parallel to x-axis
4. (c) 1
5. (b) both are irrational
1. 50° because 180 - (90 + 40) = 50 in ∆AOD where O is the point of intersection of diagonals.
2. Here (a) and (b) have an unique solution.
=> (a) and (c) also have an unique solution
=> (b) and (c) also have an unique solution
3. (c) parallel to x-axis
4. (c) 1
5. (b) both are irrational
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