Geometry

Perpendicular Lines - Definition, Slope, Examples

Geometric Transformations: Definition, Types and Examples

Trapezoid: Properties, Area, and Formula Guide

Rhombus: Properties, Area, and Perimeter

Cylinder — Shape, Formula, Examples

Parallelogram - Properties, Area, and Formulas

Pythagoras Theorem - Formula, Proof, Examples

Pythagoras theorem says a² + b² = c². Learn the formula, four proofs, common mistakes, the 4,000-year-old Babylonian tablet, and worked examples.