Geometry and Trigonometry Main menu for Geometry and Trigonometry Description 1 Area and Perimeter Under construction 2 3D drawing Isometric Coloring Cube Structures 3 - Right-angle triangles The Pythagorean theorem Introduction to trigonometry Visual trig values Estimate angles and sides SOH CAH TOA for a side SOH CAH TOA for an angle Online, interactive and printable resources for right angled triangles and trigonometry 4 - The unit circle and trigonometry The unit circle Exact values of trigonometric ratios Solve trig equations Online, interactive and printable resources for the unit circle 5 - The sine and cosine laws The sine law The cosine law Online, interactive and printable resources for sine and cosine laws