The Left Angle Cross of the Plane is named for Gate 36 and Gate 6, both seated in the Solar Plexus. Human Design reads Gate 36, from Hexagram 36, Darkening of the Light, as emotional crisis, the turbulence a person passes through when an experience is genuinely new to them; and Gate 6, from Hexagram 6, Conflict, as the friction that both guards and opens intimate and sexual contact. It sits in the Left Angle family, and Human Design reads that group as outward facing, less a chosen plan than a role other people keep handing back.
Its design half is Gate 10 and Gate 15, both seated in the G, or Identity, centre. Gate 10 is read as love of self, behaviour that stays true to one's own nature rather than to expectation, and is one of the four Integration gates. Gate 15 is read as a love of humanity broad enough to embrace extremes, together with a personal rhythm that refuses to settle into any regular pattern.
So a chart carrying this cross meets crisis with guarded intimacy on a shared emotional surface, while beneath it a single Identity centre houses both a fidelity to one's own nature and a tolerance for every extreme. The same four gates also underlie the Juxtaposition Cross of Crisis, and mirror again as the Left Angle Cross of the Plane reversed. Both hexagrams are old texts; pairing them this way as a life direction dates from the system's founding in 1987.