The Tri-Angle has one front Cannon and two Cannons on its back end, resembling a triangle-like figure. Due to its two back Cannons, the Tri-angle is one of the fastest tanks (while facing forward of course) in Diep.io. The angles between Tri-Angle Barrels clockwise from the front Cannon are: 150º, 60º, & 150º.
The Tri-Angle has three Barrels. One faces the front and the two other at the back. It has a great Movement Speed, thus it suffers a recoil that speeds it up while going forward when firing. The front Barrel shoots bullets that has a the amount of Bullet Speed, Penetration, Damage and Reload as the Flank Guard. The bullets fired by the barrels at the back are weaker and last only for 1.5 seconds instead of 3 seconds.
As a Body Damage build, the player should use their speed to avoid projectiles rather than trying to fire at it to reduce damage taken. If you encounter a Smasher (which can upgrade its stats up to 10 instead of 7), try to tap it to test its stats. If the Smasher regenerates very quickly from the ram, just run, you have no chance in a 1v1 unless it actually has lower body stats than you. If it doesn't, you might have a chance by tapping it, regenerating, tapping it again until its health gets low enough for you to kill it. But keep in mind that this is a risky strategy, and if you don't react at the right time the Smasher will "one-ram" you.
The player should avoid charging at their enemy head on; especially if they are firing at the player. Instead, try to weave in through the projectiles and slowly get closer so the opponent can be struck. If this tactic fails, consider finding a new target to take on. The player can also circle the enemy and slowly spiral in closer, although this doesn’t always work and the player may need to retreat.
Think twice before entering a fight with many Bullets, or Bullet spammers. Due to the low amount of shots fired from the front, the Tri-Angle is not ideal for Bullet-Bullet shielding and it is sometimes fatal to enter a shower of high-penetration Bullets.
As a Bullet Damage Tri-Angle, the player should only consider putting two points into Bullet Speed. Two points are just enough to keep up with a max speed and Reload Tri-Angle. This, combined with maxing Bullet Penetration can create a Bullet wall that both serves as protection or as offensive fire.
It is the choice of the player whether they want to upgrade health or speed points.
The player should use speed to their advantage. They should either face away from enemies to run, or face towards them to close the gap. Maxing out reload and movement speed will increase this effect. Due to the Tri-Angle being a very fast tank, it is useful for its speed in order to catch up to tanks.
The Tri-Angle is very effective against Overseer, Overlord, Manager and Necromancer. The player should try and bait out the spawned Drones to attack them and make a sharp turn for the opposing tank , placing themselves between the drones and the tank's body, and ram into them. The player's back cannons also weaken the spawned Drones, making it effective at wearing them down.
The Sniper and its upgrades are usually easy prey. The player should use their movement speed and dexterity to avoid the projectiles and close in for the kill while also taking minimum damage. Snipers shouldn’t be a problem since they have low reload.
Avoid Body Damage tanks at all costs. The player can lose a great deal of health by simply ramming into them. The player should try to see signs of Body Damage tanks, such as low damage projectiles, no projectile penetration or high Movement Speed of the tank.
Destroyer and Hybrid are major threats to a body damage Tri-Angle. Their projectile recoil, combined the fact that they can either build Body Damage or Bullet Damage makes it very difficult to ram into them. The player should try to bait it into chasing them, and make a sharp turn to kill them off-guard before they charge up another bullet.
A Tri-Angle can easily be countered by other Tri-Angles or Boosters. Machine Guns, Sprayer, Gunners, Hybrids or Triplets, as their projectiles and high fire rate simply go through the Tri-Angle’s projectiles while also being able to protect themselves from Body Damage Tri-Angles.
If the player is a basic tank, they should move to the side sharply as the Tri-Angle comes in to ram them. Its momentum and the user’s shock will make it fly way past the player. This ought to be done multiple times and the Tri-Angle should simply give up. The player should remember to stay away from the border or Maze walls when doing this.
As an Overseer, Overlord, Necromancer, or Manager, the player should avoid trying to send their Drones directly at the Tri-Angle. Chances are, the opposing Tri-Angle may see this as an opportunity to strike back, most likely destroying the player. Instead, the player should keep their Drones around them and try to find cover from other tanks.
Using the Destroyer branch might also be an effective counter, as the Destroyer’s Bullets deal a very large amount of damage. Although the Tri-Angle can be extremely fast, its bullets are weaker than a normal tank’s would be, the Destroyer Bullets will be able to pierce through its bullets and kill it. If it uses a Bullet Build, however, the player could retreat, as their recoil could make them fast enough to outrun it.