Recently I've been asked about how to make a Tetra-Pod with Dynamo. After I created one, I felt it's a quite simple but good example of using geometrical construction in Dynamo, so I'm posting about it.

Basically, the geometry of a Tetra-Pod is from a regular tetrahedron as it's name. So if a regular tetrahedron could be created, making a Tetra-Pod wouldn't be very difficult.

Actually, I've already posted about creating five types of regular polyhedrons a few years ago.(You can read the post here) I've used math to find each necessary angles at the post. This time, I didn't use any math calculations to find angles. Only pure geometrical methods were used instead. Geometrical constructions are useful especially when you want to avoid errors of float numbers.

**1. Define regular triangle for bottom (in geometrical method)**

**2. Find top apex.**

**3. Get the rest of the edges, and find the center point of the tetrahedron.**

**4. Get frames.**

Four lines which connect between center point and each apexes can be found. They are four legs of a Tetra-Pod.

**5. Create circles for loft**

**6. Generate a solid by loft.**

Now, a fine accurate Tetra-Pod geometry is generated without any complicated math.

Excellent exercise, thank you

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