3X+9X=180
12X=180
X=15°
Angle 1=3X
Angle 1 =45°
That's your answer.
Answer:
B.
Step-by-step explanation:
So you have to find the base of the trapezoid.
12 + 6 + 2 = 20

Find how many numbers are divisible by two and three, then place that number above the total number of items in the set as a fraction. Like this: