Geometry

1. Equation

1.1. Pi

1.2. sine,cosine, tangent

1.3. pythogorean theorem

2. geometric properties

3. Area

3.1. circumference

3.2. volume

3.3. angles

3.3.1. central angles

3.3.2. interior angles

3.3.3. angle relations

3.3.4. angle conjectures

4. measurements & dimensions

5. Shapes

5.1. circles

5.1.1. circle conjectures

5.2. sphere

5.3. triangles

5.4. polygons

5.4.1. quadrilateral

5.5. symmentry

5.6. arc