Dragon Puzzle to Practice Special Right Triangles
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Can you conquer this dragon-shaped puzzle using your knowledge of special right triangle relationships?

Looking for more printable geometry puzzles for your classroom? Here’s just a few examples of other geometry puzzles I have shared!
Puzzle Source
I originally ran across this dragon puzzle for special right triangles in a scanned PDF of a packet of worksheets that had been uploaded online.
I immediately fell in love with the puzzle because each of the triangles in the dragon shape was a special right triangle. But, there was no source.
After a bit of research, I was able to find the original source. I found the problem in both Windows to Mathematics 10 – An Integrated Approach and McDougal Littell’s Geometry: An Integrated Approach.
Using this Puzzle in the Classroom
I printed the puzzle for students to glue in their trigonometry interactive notebooks.
My students got really involved in this problem, but they really complained about the size. I downsized it to fit in our notebooks, but there was so much going on in the problem that they soon ran out of room to label sides and angles.
In the future, I’d do this problem again, but I think I would print the dragon on an 11 x 17 cardstock so students can write ALL over it.
Free Download of Dragon Puzzle to Practice Special Right Triangles
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Dragon Puzzle (PDF)
2426 downloads – 192.89 KB
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Dragon Puzzle (Editable Publisher File ZIP)
1603 downloads – 339.30 KB
Other Online Versions of This Puzzle
Here are several other online versions of the dragon puzzle that might be of interest to you:
Activity Solutions
Activity and worksheet solutions are available on a password-protected solution page. I do not openly post the answer keys because one of my goals as a resource creator is to craft learning experiences for students that are non-google-able. I want teachers to be able to use these activities and resources in their classrooms without the solutions being found easily on the Internet.
Please email me at sarah@mathequalslove.net for the password to the answer key database featuring all of my printable puzzles and math worksheets. I frequently have students emailing me for the answer key, so please specify in your email what school you teach at and what subjects you teach. If you do not provide these details, I will not be able to send you the password.