Answer:
137
Step-by-step explanation:
The sum of all three angles; <ABC, <ABD, and <CBD is equal to 360
now we know <ABC = 118 and
the measure of central angle <CBD is equal to measure of the arc it sees so it's = 105
we are asked to find the m<ABD
118 + 105 + <ABD = 360 add like terms
223 + <ABD = 360 subtract 223 from both sides
m<ABD = 137
