There is a puzzle that you draw triangle with any three points ANY and when the done they ask whose it What trick to this game I figure out?

This sounds like a fun game! It's likely a variation on a classic trick. Here are a few ideas:

The "Trick" is in the Setup:

* The Triangle is Predetermined: There's a secret pattern or arrangement to the points you're asked to choose. The person running the game may strategically place them so that no matter what three points you choose, they will always form a specific type of triangle (e.g., isosceles, right-angled, equilateral).

* Hidden Clues: There could be subtle visual cues on the board, or perhaps the person running the game is subtly guiding you towards certain points. They might say things like, "Pick a point on the left side" or "Choose a point near the bottom," subtly influencing your choices.

The "Trick" is in the Explanation:

* Misdirection: They might have a pre-determined answer and use their questions to lead you to that answer. They might ask, "Is it a big triangle?" or "Is it a pointy triangle?" and then use your responses to steer you towards their desired answer.

* Wordplay: The "whose" could be a play on words. For example, the answer might be "it's your triangle" because you drew it, or "it's mine" because they secretly planned it all along.

How to Figure it Out:

1. Pay Attention: Observe carefully. Are there any patterns to the points? Are there subtle cues from the game runner?

2. Experiment: Try to pick points in different areas and see if you can find any patterns in the resulting triangles.

3. Ask Questions: Don't be afraid to ask questions about the game rules or the person's process.

4. Look for the "Punchline": Think about how the answer could be a play on words or a misdirection.

Ultimately, the best way to figure out the trick is to be observant, curious, and have fun with it!