Question

Ray OB bisects
** 12x-4 // 13x-9 is what is between the lines!

Answer 1

Explanation:

13x - 9 = 12x - 4 ⇒ x = 5

m∠AOB = m∠BOC = 56°

m∠COD = 90° - 56° = 34°

m∠AOD = 90° + 56° = 146°