Math 109 Modern Geometry
Lecture notes
Section 1.1 (Statements and Reasoning)
Section 1.2 (Lines and angle Relationships)
Section 1.3 (Mathematical Systems)
Section 1.4 (Angle Relationships)
Section 1.5 (Introduction to Proofs)
Solutions to Exam 1 study Guide
Chapter 2 Notes
Section 2.1 (Parallel Postulate)
Section 2.3 (Proving Lines Parallel)
Section 2.4 (Properties of Triangles)
Section 2.5 (Properties of Polygons)
Chapter 3 Notes
Section 3.1 (Proving Triangles Congruent)
Section 3.2 (Corresponding Parts of Congruent Triangles are Congruent)
Section 3.3 (Isosceles Triangles)
Chapter 5 Notes
Section 5.1 (Ratios and Proportions)
Section 5.2 (Similarity and Similar Triangles)
Section 5.3 (Pythagorean Theorem)
Section 5.4 (Special Right Triangles)