Looking for fun and engaging geometry puzzles? Here is a collection of 25 free printable geometric puzzles that I have used in the past with my high school math students. Most of these puzzles should be appropriate to use with individuals ranging in age from upper elementary school or middle school to adults. My students’ …

# Geometry Puzzles

Sankaku puzzles are a geometric based logic puzzle that focuses on finding the area of a triangle. The goal of each puzzle is to connect three dots to form a triangle with the specified area. Sankaku puzzles are the creation of Naoki Inaba, a prolific Japanese puzzle creator. I first discovered these puzzles several years …

This tricky triangles puzzle has been around for over a century – can you arrange these eight sticks to form exactly four triangles and two squares? The original puzzle was meant to be solved with matchsticks, but I don’t think I need to explain why I won’t be giving my students matchsticks to play with… …

It’s November which means it’s finally time to pull out this Triangular Turkey puzzle for Thanksgiving. How many different triangles can you find in this picture of a Thanksgiving turkey? I ran across this triangular turkey puzzle in a Martin Gardner book (Perplexing Puzzles and Tantalizing Teasers) this summer, and I knew I had to …

In this Congruent Shapes Puzzle, students are given two colors of puzzle pieces. The task is to arrange the two colors of pieces to form two congruent shapes. You can rotate pieces and flip them over but not overlap them. This Congruent Shapes Puzzle is the creation of the brilliant Erich Friedman and can be …

This summer I typed up this Fitting Shapes Puzzle. Can you fit the six shapes into the board without overlap? I found this puzzle in The Big Book of Brain Games by Ivan Moscovich. This book seriously weighs several pounds, and it has 1000 puzzles in it. Several blog readers have shared with me that …

I’m excited to get back to featuring a new puzzle of the week every week in my classroom this year. A new puzzle I have prepped for this year is called Three of Five. Three of these five figures fit together to create a triangle. Which ones are they? I ran across this puzzle in …

Looking for a challenge? Check out this page of Make It Pythagorean Puzzles. Insert the same digit (in any manner of your choosing) to each side of the triangle to form a right triangle. I ran across these interesting puzzles in Golf on the Moon by Dick Hess (Dover Publications).

This 577 = 11111 Puzzle asks you to arrange the numbers 5, 7, and 7 to make a shape. Then, you are tasked to make an identical shape using the numbers 1, 1, 1, 1, and 1. This creative puzzle was created by Erich Friedman and shared in Puzzle Box, Volume 1. Have you noticed …

The Parts of a Whole Puzzle gives students five shapes that must be arranged to form a triangle whose three sides are of equal length. In other words, form an equilateral triangle. I would have renamed this as the Equilateral Triangle Puzzle, but I have already shared a different equilateral triangle puzzle on my blog …