Activity 7: Opposite but Supplements One Another! Given: Quadrilateral BONT is inscribed in ⨀E.1. The opposite angle of ∠B is ∠N. What is the opposite angle of ∠O? 2, The intercepted arc of ∠B is ONT ̂. How about ∠N? 3. Find the measure of ONT ̂ and the measure of the intercepted arc of ∠N. 4. Find the sum. How do you call a pair of angles having that sum? 5. Do the same process for angles O and T. 6. What can you say about opposite angles of an inscribed quadrilateral?