This geometry math puzzle is in English and Spanish. Students are advised not to use the internet but to try to solve it themselves! See what happens!! Tell them not to look on their cell phones, too. They can use a piece of string to measure curved lines, and a ruler to measure the length of the string. It is intriguing! Perhaps, they can solve it in groups? It gives them a taste of what being a math detective is all about! An answer key is provided. Have fun!!! Thanks so much for visiting