Most important links for the topic:
Angles Chase
Pythagoras
Which Side
Trigonometry
Geometrical Transformations & Polygons:
Transum Reflection Art
Transum Reflection
Transum Vectors
Transum Rotation
Transum Enlargement
Transum Matching Rotational Symmetry
Transum Polygon Matching
Transum Polygon Line Symmetry
Transum Polygon Rotational Symmetry
Transum Polygon Properties
Transum Polygon Angles
PADLET
Geometrical Reasoning
Maths is Fun Types of Angles (Complete the questions at the bottom of the page.)
Transum AWESOME Angle Theorems (Wait for the Geogebra Applets to load.)
Transum Angles at a point
Transum Angles on a line
Transum Vertically Opposite Angles
Transum Angles Mixed
Maths is Fun Parallel Lines
Transum Alternate Angles Parallel Lines
Transum Corresponding Angles Parallel Lines
Transum Parallel Lines Mixed
Transum Angles in a Triangle
Transum Congruent Triangles
Maths is Fun Pythagoras
Transum Pythagoras
Transum VIDEO
Transum Triangles Language
Transum How Many Triangles
Maths is Fun Trigonometry
Transum Trig
Circle Theorems
Geometry
Math Cats Tessellation Town
Make your own Tessellation
Transum Tessellations
Transum Pentominoes
Maths is Fun Coordinates
Transum Plane Bearings
Transum Air Traffic Control
Maths is fun bearings
Transum Sheep
Maths is fun Locus
Animations