Angle Loop Puzzles
These angle loop puzzles from Naoki Inaba challenge you to create a closed loop that matches all of the angle measurements that it travels through.

Looking for more printable geometry puzzles for your classroom? Here’s just a few examples of other geometry puzzles I have shared!
What are Angle Loop Puzzles?
Angle Loop Puzzles (originally published as 角 DE ループ) are a type of geometry puzzle that involves making a closed loop through all the points on the grid. Whenever the loop passes through a number, it must form the angle indicated by the number.
For example, if the loop passes through the number 120, the loop must form a 120 degree angle at that point.
The loop should not intersect itself.
These puzzles are perfect for encouraging critical thinking and make a great extension task while studying angles in geometry!
Puzzle Source
These Angle Loop Puzzles are the creation of prolific Japanese puzzle creator, Naoki Inaba. Inaba’s website is a treasure trove of puzzles for math teachers, but it is entirely written in Japanese.
Printable Version of Angle Loop Puzzles
These Angle Loop Puzzles are available as a free PDF that can be downloaded from Naoki Inaba’s website.
Puzzle Solutions
I do not have an answer key for this puzzle yet, but it’s on my to do list. Coming soon!