Proportions and Similarity

Proportions

Similar Polygons

Similar Triangles

Parallel Lines and Proportional Parts

Parts of Similar Triangles

Fractals and Self-Similarity

More Geometry Topics
Points, Lines, Planes, and Angles
Reasoning and Proof
Parallel and Perpendicular Lines
Congruent Triangles
Relationships in Triangles
Right Triangles and Trigonometry
Quadrilaterals
Transformations
Circles
Areas of Polygons and Circles
Surface Area
Volume