## IGCSE Transformations – Rotation

Rotations in space make good Saturday morning maths at the King’s School.

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# Month: November 2015

## IGCSE Transformations – Rotation

## Great Circles and Spherical Triangles

Have got absorbed by the National Cipher Challenge. Not sure what this animation varying the multiplier in an ‘Affine Shift’ add 5. Functional grid shows transition from Caesar Shift 5, multiply by 1, through to multiply by 13, which is a useless cipher. In fact any multiplier not co-prime with 26 can be seen to be …

Rotations in space make good Saturday morning maths at the King’s School.

In the geometry of mariners, where straight lines are Great Circles, the angle sum of a triangle is more than 180 degrees.