Similar Right Triangles

thingiverse

These aren't the most intricate objects, but they're designed to be measured and used in a right triangle trigonometry lesson titled "Trig Definitions with Right Triangles," available at https://graspthemath.files.wordpress.com/2018/05/trig-def-triangle-activity-docx.pdf. You can find a Word version and other lessons on the Trigonometry page of my website: https://graspthemath.wordpress.com/trigonometry. The four triangles used are scaled versions of each other, resulting in the same trig ratios once simplified. They could also be utilized in an algebra class for a lesson on ratios/proportions and similar figures; however, I haven't written up that material yet. Files starting with "vert*" are printed vertically, while those beginning with "flat*" are printed flat. Some printers may be more accurate in the z-direction than in x-and-y directions, so I included the vertical files for those who prefer not to reorient them all in their slicer.