Triangle Holes is the 25th Advanced stage of Challenge Mode and World 4-5 of Story Mode in Super Monkey Ball 2 (64th Advanced stage and World 4-8 in Super Monkey Ball Deluxe); it is also the 124th stage of Ultimate Mode without continues (104th with continues).
This stage has one goal at the end of a platform containing triangular holes. The smallest of these are at the front and back parts of the platform, and the largest ones are at the middle. There are two single bananas at the back corners of the platform.
Simply hold up, and you'll bounce into the goal.
you also can roll across the platform slowly, but this method is not at all recommended since this requires a significant amount of precision. To do this, roll between the triangular holes very carefully. Make sure to have enough speed for the uphill section. Repeat this pattern until you make it to the goal.