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Special Right Triangles Posters

Since I’m teaching trig this year, I wanted to create some special right triangles posters to jog my students’ memories. Special right triangles are a topic they study in geometry but have often forgotten by the time they end up in my trig class. 

Special Right Triangles Posters - High School Math Classroom Decorations Geometry Trigonometry

I designed the title to print on 8.5″ x 11″ and the triangle posters to print on 11 x 17 cardstock so they can be seen from across the room.

Special Right Triangles Posters - High School Math Classroom Decorations Geometry Trigonometry

45 – 45 – 90 Special Right Triangle Poster

45 45 90 Special Right Triangles Posters - High School Math Classroom Decorations Geometry Trigonometry

30 – 60 – 90 Special Right Triangle Poster

30 60 90 Special Right Triangles Posters - High School Math Classroom Decorations Geometry Trigonometry

If you don’t have access to 11 x 17 cardstock, my husband showed me the other day that you can print the file to two 8.5″ x 11″ pages and tape them together.  He did this with my grouping symbols poster, and it looked great!

Free Download of Special Right Triangles Posters


Special Right Triangles Poster Title (PDF) (240 downloads)


Special Right Triangles Posters (PDF) (268 downloads)


Special Right Triangles Posters (Editable Publisher Files ZIP) (123 downloads)

For the Publisher file, you’ll need to download the font Wellfleet or substitute your own favorite font.  Downloading the PDF file will preserve the fonts and the formatting.

Want even more posters? Check out my posters page!