51动漫

Enigma

29 January 2014

Answer to 1779

Four triangles The sides are 9 mm and 97 mm

The winner James Pointon of Stoke-on-Trent, Staffordshire, UK

More from 51动漫

Explore the latest news, articles and features

An image of a galaxy

Comment

The best new science-fiction novels of August 2026

Environment

How Europe can make its landscapes more fire-resilient

Health

Climate change may help eliminate malaria from West and Central Africa

Health

Could eating less protein slow ageing?

Popular articles

Trending 51动漫 articles

Thousands of people in China have had banned Alzheimer’s surgery

First-of-kind Guillain-Barr茅 drug switches off part of immune system

Quantum computers are starting to become useful as scientific tools

Game that reduces dementia risk may clear amyloid from men’s brains

Your body changes as you age and so should your diet 鈥� here鈥檚 how聽

Could eating less protein slow ageing?

Henrietta Lacks’s descendant on her legacy – and Rebecca Skloot’s book

The genome of a long-extinct ancient human is hiding within us

Where to watch the next total solar eclipse anywhere in the world

The secrets to keeping your brain sharp in old age