SHAPE LAB 3D

Spin real 3D shapes, count their faces, edges and corners, and learn their names. With red-green glasses they float right out of the screen!

🧪 Lab levels

Do you have 3D glasses? Red-green, red-blue and red-cyan glasses all work.

You can change this any time from the menu.

Less depth is easier on the eyes. More depth pops out more.

Put the glasses on and cover the eye behind the green lens, so you look only through the red lens. Slide left until the green bar disappears.

Now cover the eye behind the red lens, so you look only through the green lens. Slide left until the red bar disappears.

3D mode is just a fun way to play. If your eyes feel tired, take a break or play without glasses.

Every shape you meet in the lab is kept here. Drag it to turn it.

Each lab level asks 6 questions about a 3D shape. Drag the shape to turn it and look at every side.
A face is a flat side. An edge is where two faces meet. A vertex is a corner where edges meet (two or more are called vertices).
To count, tap the faces, edges or corners: each one you tap gets marked and the counter goes up. Tap again to unmark. Turn on 👁 See-through to see the back too.
Then tap the right answer. No mistakes gets ⭐⭐⭐.
Right answers earn 💎 crystals. Spend them on new shape colours. Every shape you meet goes into your Gallery.
From level 8 you will find a secret rule that works for every shape like these. Can you spot it before the game tells you?

Try this: hold your finger in front of your nose and look at it with one eye, then the other. It jumps! Each eye sees from a slightly different place.
Your brain compares the two pictures. Close things jump a lot and far things hardly jump. That is how you see depth. It is called stereo vision.
Shape Lab draws the shape twice, from two eyes a little apart: one picture in red and one in green. The red lens hides the green picture and the green lens hides the red one, so each eye gets its own picture.
The middle of the shape sits on the screen. The corners turned towards you pop out of it, and the ones turned away sink into it.
Architects, engineers and game makers draw 3D shapes on flat screens every day. They use the same idea: a shape is just corners (vertices) joined by edges, with flat faces in between.