An adjustable triangle useful for demonstrating geometry concepts - also works as a fidget.
Example Lessons and Demonstrations
- Types of triangles
- Angle/side relationships
- Triangle congruency
Customization
Sizes
- Small - 60mm of travel
- Large - 120mm of travel
Track Styles
- Standard - Supports infinite angle and distance settings
- Click - Supports a smaller range of settings for the benefit of locking into predefined positions
Dial Styles
- Large - Better grip
- Small - Less obtrusive
Printing
- Designed for 0.2mm layer heights
- All parts can be printed without supports
- How well sliding parts move will depend on print quality
- Avoid brittle filaments to prevent parts from snapping
Parts List
To print a triangle, you will need three copies of both the top and bottom track of the size and style of your choice. You can mix track lengths but you cannot mix track styles.
You will also need 6 dials, which can consist of a mix of small and large sizes.
Assembly
See video above for a step-by-step assembly.
Can I sell copies of this?
Yes! This project was shared under the Creative Commons - Public Domain license.
This license grants you permission to download, distribute, alter, print, and sell copies of this design.
This license applies only to the model files (STL, 3MF, STEP, F3D) included in this project. It does not apply to photos, videos, my logo, or other supplemental graphics attached to or displayed with this project.
Attribution Text
This license does not require attribution. But if you choose attribute my work, feel free to use the following text.
"Tactile Triangle Teaching Tool" (https://3dprinty.xyz/project/137) is designed by 3D Printy (https://3dprinty.xyz) and shared under a Creative Commons Public Domain (CC 0 1.0) license (https://creativecommons.org/publicdomain/zero/1.0/).