LAS VEGAS — His uncle, former Bulls forward Horace Grant, has called the triangle offense “like learning Mandarin the first year.’’ But new Knicks combo guard Jerian Grant, after two days of summer-league practice in Vegas, appears to be a faster learner than Uncle Horace.

“It’s been exciting — real comfortable learning the offense,’’ Grant said on the eve of his Knicks summer-league debut Saturday, against the Spurs. “It’s a lot of movements and I’m really into that. It looks like it really works. The movement, putting players in a position where they can succeed. I haven’t talked much about the offense yet [with my uncle], but we’ll get to that I’m sure.’’

The savvy, 6-foot-4 point guard from Notre Dame actually may net as much — if not more — playing time as a rookie than No. 4 overall pick, Kristaps Porzingis, who is 19 years old and considered a project because of his body type.

The Knicks gave up on their 2013 first-round pick, Tim Hardaway Jr., to obtain the rights to Grant, the 19th pick, from Atlanta.

Knicks coach Derek Fisher believes the triangle allows rookie point guards a smoother transition into the NBA. Grant’s ability to play both guard spots — unlike Hardaway — factored into a trade that had Carmelo Anthony disappointed.

“We would not have drafted him where we drafted him if we didn’t think he could do a lot of the things we like our guards to do,’’ Fisher said after practice at Las Vegas’ Clark High School. “You have to be able to shoot, handle, make good decisions, defend. It’s not just one or the other to play guard in our system. That’s what we like about Jerian.”

In particular, Fisher already likes the way Grant, 22, distributes. He averaged 16.5 and 6.6 assists last season as a senior.

“He’s a really good passer,’’ Fisher said. “I don’t know if people view that part of his game as a strength. His assist numbers were solid in college, but he’s a guy who can make plays for himself and other people. We like that about him.

“We view the way we play as another reason the transition is a little easier,’’ Fisher added. “We don’t just give a guy the ball and say go do everything. The system facilitates the offense and doesn’t put pressure on one guy.”

There have been suggestions new shooting-guard signee Arron Afflalo could be used as the dynamic sixth man and Jose Calderon and Grant could share the backcourt to add more pace and younger legs. Grant knows it won’t take long for him to be part of the rotation.

“Obviously I have a long ways, but being 22 helps to go out right away and play with some of these older, mature guys,’’ said Grant, who led Notre Dame to the Elite Eight last season.

Meanwhile, the much-hyped debut is near for Porzingis, who went through a full scrimmage Thursday night and practice Friday afternoon, the Latvian’s hip seemingly healed. Fisher even praised Porzingis’ defense — cited to be behind his offensive game. The Knicks coach believes Porzingis’ strong grasp of English will make his transition from the Spanish League smoother than that of most young overseas players.

“He’s a pretty good defensive player,’’ Fisher said. “He uses his length very well, communicates very well.

For an international player, that’s a big advantage right from the start. That you’re not battling a language barrier. That’s going to be huge for his development early on. We’re excited about that part as well.’’