The Eclecticon of Dr French

Geometry

Proof of circle theorems

Geometric transformations using matrices

IGCSE trigonometry proofs First 86 Pythagorean triples Special triangles

Basic geometry notes Chimborazo

Areas of basic shapes Arcs, sectors, radians Argand diagram complex loci Cartesian equation of a circle Circle theorems Lines and angles Loci & constructions Polygons Symmetry Transformations using matrices: Intro Transformations using matrices: Rotations Transformations using matrices: Not about the origin Transformations using matrices: Invariant lines Triangles, Circles & Hero’s Formula Vectors Vector equations of lines and planes Volumes of basic solids

Maths is Fun: Geometric Construction animations

Tintern window

First created July 2012