Dr Rik Tangerman

Mirangu is about the joy of mental excercise. Puzzling and problem solving are very satisfying activities. It’s about playing and having fun, but within the rigour of geometric forms and relations. Both on this site and on Twitter we hope to inspire people of all skill levels to enjoy this wondrous pleasure of geometry.

Mirangu is based in The Netherlands and is initiated by Rik Tangerman. He holds a PhD in theoretical physics, and has ventured into marketing and information technology jobs, both as an employee and as an entrepreneur.

In his high-school days, Rik’s favourite subject was mathematics. Its clarity and beauty always appealed to him strongly. In solving and creating geometry puzzles, he revives this high-school love.


Most of the puzzles are enriched by French poet Bella. Through the magic of Twitter she discovered Mirangu and it’s geometrical figures. “This world fascinates and enchants me. It inspires me to write poetic texts, in English, and to highlight the poetic side of geometry. It expresses the beauty of lines and infinite creation. As a French writer it’s always a challenge to go through the mirror and let my imagination run free. An unceasing happiness.”

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