Answer:
The correct option is 154
Step-by-step explanation:
Base angles of an isosceles trapezoid are equal.
We have:
18x+8 = 11x+15
Combine the like terms:
18x-11x=15-8
7x=7
Divide both sides by 7
7x/7 = 7/7
x=1
Therefore the base angles are 18+8 = 26 degrees. Now subtract 26 degrees from 180 degrees to get m∠K.
180-26 = 154
Thus the correct option is 154....
