Name the special angle pair relationship you will use to find x. Then, find the value of x. 1. 3. 2. 399 1249/ 2x X1550 Fill in the blank. Choose ALL that apply. Angie Relationship 5. If two angles share a side, they are Complementary Supplementary 6. Two angles are if they are formed by intersecting lines and are nonadjacent. Adjacent 7. If the sum of two angles is 180°, they are Vertical angles. Lineae 8. Adjacent angles that have a sum of 180° are called a 9. Two angles are if the sum of their measures is 90°.​