Dr Maths, Steve Humble, looks at hidden maths in Durham Cathedral, in this Key Stage 3 maths and architecture video.
Steve a maths teacher, examines how a cathedral like Durham was designed by following the master mason's use of practical geometry, symmetry, pattern and proportions.
Here, the challenge is to measure one of Durham Cathedral's towering columns, using rope, a metre rule and similar triangles.
The video uses Northern Architecture's Making Architecture Count project for schools.
