When a plane is perpendicular to both the reference planes, its traces are perpendicular to ______________
When a plane is perpendicular to both the reference planes, its traces are perpendicular to ______________ Correct Answer xy reference line
When a plane is perpendicular to both the reference planes, its traces are perpendicular to xy reference line and intersect at xy reference line even when the planes are inclined with both reference planes the traces intersect at xy line.