Question 103595
The sum of all four angles of quadrilateral is always 360 degrees.
So...
3x + 3x + 45 + 45 = 360
6x + 90 = 360
6x = 270
x = 45
Now that we know what x equals we can find the measure of angle G
Angle G = 3x
Angle G = 3(45)
Angle G = 135