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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.

angle loop puzzles by naoki inaba.
fun geometry puzzles. 

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.

angle loop puzzles by naoki inaba.

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.

Puzzle Solutions

I do not have an answer key for this puzzle yet, but it’s on my to do list. Coming soon!

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