back to Lecture Notes    Home Lecture Notes - General Education Mathematics Logic The Words AND and OR Logic 1 Logic 2 Set Theory Introduction to Set Theory Set Operations More on Sets Number Theory Introduction to Number Theory Is this Number a Prime? Prime Factorization The GCF and LCM Divisibility Combinatorics Combinatorics 1 Combinatorics 2 Combinatorics 3 Inclusion-Exclusion The Pigeonhole Principle Probability Theory Introduction to Probability Theory Expected Value Finance Simple and Compound Interest The Compound Interest Formula Present Value Installment Buying Geometry The Triangle Inequality Angles in a Triangle Tangents to Circles Perimeter and Area of a Rectangle Perimeter and Area of a Right Triangle Perimeter and Area of a Triangle Perimeter and Area of a Parallelogram Perimeter and Area of a Trapezoid Circumference and Area of a Circle The Pythagorean Theorem (Algebra 1 Version) The Pythagorean Theorem (Algebra 2 Version) Similar Triangles Quadrilaterals Introduction to Construction Geometric Constructions (Worksheet) Thales's Theorem The Inscribed Circle The Supercribed Circle Angles in Circles Algebra Review The Order of Operations Agreement Order of Operations on Integers One- and Two-Step Equations Simplifying Algebraic Expressions over Z Multiplying Algebraic Expressions over Z More Linear Equations Basic Percent Problems More Percent Factoring out the GCF Factoring by Trial and Error Radical Expressions - Part 1 Radical Expressions - Part 2 This page was last updated on October 4, 2026. Questions, comments: please e-mail to mhidegkuti@ccc.edu.