Catriona Agg's geometry puzzles, live

Catriona Agg's geometry puzzles redrawn as live constructions you can drag, with links to Andrew Stacey's catalogue, techniques and solutions at Mathforge Notes.

Live Geometry Catriona Agg's Puzzles

The geometry puzzles of

Catriona Agg...made interactive!

Since 2018 Catriona Agg, a maths teacher, has shared over 400 geometry puzzles. Some puzzles are published in a book: Geometry Puzzles in Felt Tip.

Andrew Stacey has catalogued every puzzle, and gathered the techniques and solutions, at Mathforge Notes.

Here each puzzle is redrawn as a Live Geometry drawing. Drag the white points to experiment!

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Every puzzle here is Catriona Agg's: the question, the diagram, even the colors. Follow her on BlueSky; her puzzles of 2018 are collected in the book Geometry Puzzles in Felt Tip.

The catalogue, the topics and the links to techniques and solutions come from Andrew Stacey's Mathforge Notes, where every puzzle has its own page with the original drawing.

The drawings are redrawn for Live Geometry, a free and open source geometry website, which is not affiliated with either of them. For any questions or feedback please open an issue.