This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
The Right Angle Cross of Tension is named for Gate 39 and Gate 38, and its first article reads the provocation and the fight the two carry in the Root, together with their design counterparts, Gate 21 in the Heart and Gate 48 in the Spleen. What it does not trace is where the four gates sit on the wheel itself, the Human Design mandala's division of its sixty four gates into four Quarters, and by that measure this cross draws one gate from each of the four.
Gate 39, the personality gate, falls in the Quarter of Civilization, purpose fulfilled through form. Gate 38, its personality partner, falls in the Quarter of Mutation, purpose fulfilled through transformation. Behind them, Gate 21 falls in the Quarter of Initiation, purpose fulfilled through mind, and Gate 48 falls in the Quarter of Duality, purpose fulfilled through bonding.
So the provocation and the fight the first article reads on this cross's Root surface answer to the arcs of form and transformation, while the will to control and the unspent depth beneath them answer to the arcs of mind and bonding. Four gates, four different Quarters, no pair sharing an arc: the tension this cross is named for is drawn from every corner of the wheel's own purpose rather than concentrated in one.