Maths
Free geometry tool for maths teachers. Draw, measure and label angles, areas and perimeters with an interactive shape builder for any KS3/KS4 lesson.
Why teachers use it
Draw, measure and label angles, areas and perimeters with an interactive shape builder. The geometry tool brings abstract concepts to life by letting students manipulate shapes and see measurements update in real time.
Popular classroom uses
Geometry Shape Builder is a free, no-login maths tool you can use straight away in class. It works well for fluency practice, worked examples, retrieval warm-ups, and runs in any browser on your classroom display, laptop or a student device.
Great for
Use it during
Built to be quick, clear and classroom-friendly so you can get on with teaching.
Turns abstract ideas into a clear visual you can build and explain live on the board.
It is quick to launch, so you can use geometry shape builder the moment you need it in a lesson.
It works on classroom computers, laptops, tablets and phones without any installation.
Answers for teachers looking for a fast, reliable classroom-friendly version of this tool.
Yes. Create triangles, quadrilaterals, pentagons and more with editable side lengths and angles.
Yes. Measurements update automatically as you resize or reshape.
Yes. It covers KS3 and GCSE geometry topics including Pythagoras and trigonometry.
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