Jeff Hornacek’s first use for Kurt Rambis and triangle offense

Jeff HornacekORLANDO — Jeff Hornacek’s entire staff was on hand Wednesday at the Knicks’ first summer-league practice in Orlando as the Knicks continued to run the triangle in the halfcourt.

Howard Eisley, the former Knicks point guard who played with Hornacek in Utah, is the last of the new coaching additions. Eisley was last on Randy Wittman’s Wizards staff that recently was laid off and formerly was a Clippers aide. Eisley played for the Knicks for three seasons from 2001-2004.

In a surprise, Hornacek said Westchester D-League coach Mike Miller will coach the Knicks’ summer-league club, which begins play July 2.

“He’s familiar, they run the same stuff [in Westchester],’’ Hornacek said. “Let…