DIY: Geometric Wall Décor

What do the Pythagorean Theorum, protractors and high school students scratching their heads all have in common? Geometry!

Geometry isn’t always fun, but when you combine (or add) it with photos, the results are just fantastic.

Hang your photos in triangles for to create totally fun geometric wall décor that’ll really (math) class up your walls.

Even those of us who are less than stellar at geometry, need not fear. This project is easy as 3.14.

Create Your Own Geometric Wall Décor

Why It’s Cool

Traditional wall hangings can be really square.

That’s why we love the idea of hanging our photos in triangles.

Even if you’re not so handy with a protractor, they’re easy to make.

And, they make really great gifts. Who doesn’t love a good hexagon?


  • Photos
  • Scissors
  • Surface to Cut on
  • Pen
  • Glue
  • Utility Knife
  • Mat Board (cardboard will work too)
  • Hot Glue Gun
  • Twine (fishing line or yarn will do too)
  • T-Square or Ruler

STEP 1: Cut the Board


On the cutting surface use your T-square and utility knife to cut strips of mat board (they’ll be the 3 sides of your triangles).

Remember to press firmly on the T-square and watch your fingers when cutting the board. Sometimes it takes a couple of slices with the utility knife to cut the board.

You can choose the size of your strips depending on how big you want your triangles to be.

We made 1 inch x 4 inch strips.

STEP 2: Let’s Get Triangular


Place one strip of mat board on your cutting surface and put hot glue on both ends.

Smoosh two more pieces of mat board into the hot glue to form a triangle.

Put a small stripe of hot glue on the top of the triangle to fasten it tight.

Let the glue dry for a couple of minutes.

STEP 3: Tracing Time


Place your (now dry) triangle on top of a photo and trace around the outside of the triangle.

STEP 4: Cut the Triangle


Cut out the triangle you just traced.

STEP 5: Fasten the Photo


Place a light layer of glue (non-hot kind) along the edges of your photo triangle.

Press your mat board triangle onto the glued photograph and let it sit for about 30 minutes to make sure it’s firmly attached.

STEP 6: Make a Hexagon


Using your hot glue gun, glue the sides of your triangles and join them together to form a hexagon.

STEP 7: Hang it High


Cut a strip of twine and glue it on to the back of your hexagon to make it hangable.

Then hang it. It looks so good up there on your wall!


Taking It Further


  • Make different sized triangles to create super large hexagons or really small hexagons to use as little ornaments.
  • Paint the mat board or cardboard with a color of your liking.
  • Experiment with different shapes to create a new polygon. Layer different sized shapes on top of one another to create a multidimensional piece.