1966, Bob Shaw, Light of Other Days"I'll give you a check now," I said abruptly, and saw Selina's green eyes triangulate angrily on my face.
to pit two others against each other in order to achieve a desired outcome or to gain an advantage; to "play both ends against the middle"
Victor Davis Hanson,It is one thing to triangulate between the United States and the Arab world for short-term advantage; quite another to find oneself alienated from the heretofore supportive Americans without finding commensurate gratitude from the Middle East.
