The Right Angle Cross of Service is named for Gate 17 and Gate 18. Human Design reads Gate 17, from Hexagram 17, Following, sitting in the Ajna, as the forming of opinions, logical viewpoints organised and offered to others; and Gate 18, from Hexagram 18, Work on the Decayed, sitting in the Spleen, as corrective instinct, an alertness to what is flawed and could be set right. It sits in the Right Angle family, the most populous of the three, and Human Design reads that family as steered chiefly by personal choice.
Its design half is Gate 58 and Gate 52. Gate 58 sits in the Root and is read as vitality, a pressure that expresses itself as the urge to improve whatever is at hand; it pairs with Gate 18 in the channel of Judgement. Gate 52 sits in the Root and is read as stillness, a pressure that concentrates rather than releases; it pairs with Gate 9 in the channel of Concentration.
So a chart carrying this cross offers opinions and corrects flaws on its surface, while beneath it a restless urge to improve answers to a stillness that holds it in place. The same two gate pairs also underlie two further role arrangements of the Cross of Service. Both hexagrams are old texts; pairing them this way as a life direction dates from the system's founding in 1987.