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 Left Angle Cross of Revolution, in this ordering, is named for Gate 4 and Gate 49 rather than Gate 49 and Gate 4, the same four gates as its mirror cross with the personality and design roles exchanged. Its first article reads that exchange as an answering mind placed ahead of a principled rupture. 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 ordering draws on exactly the same four Quarters as its mirror, one gate from each.
Gate 4, the personality gate here, falls in the Quarter of Duality, purpose fulfilled through bonding. Gate 49, its personality partner, falls in the Quarter of Initiation, purpose fulfilled through mind. Behind them, Gate 8 falls in the Quarter of Civilization, purpose fulfilled through form, and Gate 14 falls in the Quarter of Mutation, purpose fulfilled through transformation.
So the answering mind and the principled rupture the first article reads on this ordering's surface still draw on the arcs of bonding and mind, while the individual contribution and the sacral fuel beneath them still draw on the arcs of form and transformation, the same four arcs its mirror cross draws on with personality and design simply reversed. Reversing which gate carries the Sun changes what the cross is read to serve, but it changes nothing about which Quarters supply its four gates.