Looking for free content to use with your textbook? You’ve come to the right place!
Get Free Content to Use with Big Ideas Math (2019) – Geometry
Khan Academy is a nonprofit with thousands of free videos, articles, and practice questions for just about every skill.
No ads, no subscriptions – just 100% free, forever.
| Lesson 1.1: Points, Lines, and Planes |
| Lesson 1.2: Measuring and Constructing Segments |
| Lesson 1.3: Using Midpoint and Distance Formulas |
| Lesson 1.4: Perimeter and Area in the Coordinate Plane |
| Lesson 1.5: Measuring and Constructing Angles |
| Lesson 1.6: Describing Pairs of Angles |
| Lesson 2.1: Conditional Statements |
| Lesson 2.2: Inductive and Deductive Reasoning |
| Lesson 2.3: Postulates and Diagrams |
| Lesson 2.4: Algebraic Reasoning |
| Lesson 2.5: Proving Statement about Segments and Angles |
| Lesson 2.6: Proving Geometric Relationships |
| Lesson 3.1: Pairs of Lines and Angles |
| Lesson 3.2: Parallel Lines and Transversals |
| Lesson 3.3: Proofs with Parallel Lines |
| Lesson 3.4: Proofs with Perpendicular Lines |
| Lesson 3.5: Equations of Parallel and Perpendicular Lines |
| Lesson 4.1: Translations |
| Lesson 4.2: Reflections |
| Lesson 4.3: Rotations |
| Lesson 4.4: Congruence and Transformations |
| Lesson 4.5: Dilations |
| Lesson 4.6: Similarity and Transformations |
| Lesson 5.1: Angles of Triangles |
| Lesson 5.2: Congruent Polygons |
| Lesson 5.3: Proving Triangle Congruence by SAS |
| Lesson 5.4: Equilateral and Isosceles Triangles |
| Lesson 5.5: Proving Triangle Congruence by SSS |
| Lesson 5.6: Proving Triangle Congruence by ASA and AAS |
| Lesson 5.7: Using Congruent Triangles |
| Lesson 5.8: Coordinate Proofs |
| Lesson 6.1: Perpendicular and Angle Bisectors |
| Lesson 6.2: Bisectors of Triangles |
| Lesson 6.3: Medians and Altitudes of Triangles |
| Lesson 6.4: The Triangle Midsegment Theorem |
| Lesson 6.5: Indirect Proof and Inequalities in One Triangle |
| Lesson 6.6: Inequalities in Two Triangles |
| Lesson 7.1: Angles of Polygons |
| Lesson 7.2: Properties of Parallelograms |
| Lesson 7.3: Proving That a Quadrilateral is a Parallelogram |
| Lesson 7.4: Properties of Special Parallelograms |
| Lesson 7.5: Properties of Trapezoids and Kites |
| Lesson 8.1: Similar Polygons |
| Lesson 8.2: Proving Triangle Similarity by AA |
| Lesson 8.3: Proving Triangle Similarity by SSS and SAS |
| Lesson 8.4: Proportionality Theorems |
| Lesson 9.1: The Pythagorean Theorem |
| Lesson 9.2: Special Right Triangles |
| Lesson 9.3: Similar Right Triangles |
| Lesson 9.4: The Tangent Ratio |
| Lesson 9.5: The Sine and Cosine Ratios |
| Lesson 9.6: Solving Right Triangles |
| Lesson 9.7: Law of Sines and Law of Cosines |
| Lesson 10.1: Lines and Segments that Intersect Circles |
| Lesson 10.2: Finding Arc Measures |
| Lesson 10.3: Using Chords |
| Lesson 10.4: Inscribed Angles and Polygons |
| Lesson 10.5: Angle Relationships in Circles |
| Lesson 10.6: Segment Relationships in Circles |
| Lesson 10.7: Circles in the Coordinate Plane |
| Lesson 11.1: Circumference and Arc Length |
| Lesson 11.2: Areas of Circles and Sectors |
| Lesson 11.3: Areas of Polygons |
| Lesson 11.4: Three Dimensional Figures |
| Lesson 11.5: Volumes of Prisms and Cylinders |
| Lesson 11.6: Volumes of Pyramids |
| Lesson 11.7: Surface Areas and Volumes of Cones |
| Lesson 11.8: Surface Areas and Volumes of Spheres |
| Lesson 12.1: Sample Spaces and Probability |
| Lesson 12.2: Independent and Dependent Events |
| Lesson 12.3: Two-Way Tables and Probability |
| Lesson 12.4: Probability of Disjoint and Overlapping Events |
| Lesson 12.5: Permutations and Combinations |
| Lesson 12.6: Binomial Distributions |