Geometry

1. Point

2. Line segment

2.1. 2 End points

2.1.1. Measurable length

3. Ray

3.1. One end point

3.1.1. Un-measurable length

4. Line

4.1. No end points

4.1.1. Un- measurable length

5. Opened and closed figures

5.1. Polygons

5.2. Triangle

5.3. Quadilatteral

5.3.1. Square

5.3.2. Rectangle

5.3.3. Rhombus

5.4. Hexagon

5.5. Heptagon

5.6. Octagon

5.7. Nonagon

5.8. Decagon

5.9. Pentagon

6. A line from centre to the circumference, can be repeated

7. The line that goes from the centre to the circmference

7.1. Can be repeated

8. Parts of circle

8.1. Circumference

8.1.1. Boundary of a circle

8.2. Centre

8.2.1. Middle of the circle

8.2.1.1. Only one

8.3. Radius / Radiii

8.4. Diameter

8.4.1. Longest chord in the circle

8.4.1.1. Passes through the centre

8.4.1.1.1. Diameter = 2x Radii

8.4.2. Dosen't pass through the centre

8.4.2.1. Can be repeated

8.5. Chord