Triangles and Trigonometry

• Types of Angles and Rules

  • Angles (Khan Academy)

  • Angles Between Lines (Khan Academy)

  • Classifying Angles (Kuta Software)

  • Composing Figures (Illustrative Mathematics)

  • Alternate Interior Angles (Illustrative Mathematics)

  • Adding the Angles in a Triangle (Illustrative Mathematics)

  • Parallel Lines and the Angles in a Triangle (Illustrative Mathematics)

  • Naming Angles (Kuta Software)

  • Information in Geometric Diagrams (Kuta Software)

  • Angles and Angle Measures (Kuta Software)

  • Angle Relationships (Kuta Software)

  • Angles and Their Measures (Kuta Software)

  • The Angle Addition Postulate (Kuta Software)

  • Angle-Pair Relationships (Kuta Software)

  • Parallel Lines and Transversals (Kuta Software)

  • Proving Lines Parallel (Kuta Software)

• Isometric (Congruent) Triangles

  • Triangle Congruence (Khan Academy)

  • Congruence Theorems (Khan Academy)

  • Triangle Congruence (Mathigon)

  • What is the Same? (Illustrative Mathematics)

  • Congruence and Triangles (Kuta Software)

  • Congruence (Kuta Software)

  • SSS and SAS Congruence (Kuta Software)

  • ASA and AAS Congruence (Kuta Software)

  • SSS, SAS, ASA, and AAS Congruence (Kuta Software)

  • Right-Triangle Congruence (Kuta Software)

• Similar Triangles

  • Similar Triangles (Illustrative Mathematics)

  • Side-Length Quotients in Similar Triangles (Illustrative Mathematics)

  • The Shadow Knows (Activity) (Illustrative Mathematics)

  • Similar Triangles (Kuta Software)

  • Proportional Parts in Triangles and Parallel Lines (Kuta Software)

• Solving Triangles (Proofs)

  • Triangle Theorems (Khan Academy)

• Metric Relations (Geometric Mean)

  • Similar Right Triangles (Kuta Software)

• Trigonometric Ratios

  • Opposite Adjacent Hypotenuse (Khan Academy)

  • Solve for a Side (Khan Academy)

  • Trigonometry Solving for an Angle (Khan Academy)

  • Modelling with Right Triangles (Khan Academy)

  • Trig Ratios Similarity (Khan Academy)

  • Sine and Cosine of Complimentary Angles (Khan Academy)

  • Trig-Ratios Special Triangles (Khan Academy)

  • Intro to Pythagorean Identity (Khan Academy)

  • Reciprocal Trig Ratios (Khan Academy)

  • Trigonometry (Mathigon)

  • Trigonometric Functions (Math Planet)

  • Inverse Functions (Math Planet)

  • Finding Trigonometric Ratios (Kuta Software)

  • Trigonometry to Find Angle Measures (Kuta Software)

  • Trigonometry to Find Lengths (Kuta Software)

  • Special Right Triangles (Kuta Software)

  • Multi-Step Special Right Triangles (Kuta Software)

  • Trigonometric Ratios (Kuta Software)

  • Inverse Trigonometric Ratios (Kuta Software)

  • Solving Right Triangles (Kuta Software)

  • Right Triangle Trigonometry (Kuta Software)

• Sine Law

  • Law of Sines (Khan Academy)

  • Sines (Math Planet)

  • Multi-Step Trig Problems (Kuta Software)

• Cosine Law

  • Law of Cosines (Khan Academy)

  • Sine and Cosine Rules (Mathigon)

  • Cosines (Math Planet)

  • The Law of Cosines (Kuta Software)

• Area of a Triangle

  • Trigonometry and Area (Kuta Software)