2. The Ellipse

3. Learning Aims and Objectives
From these exercises you will learn:
How to construct an ellipse using the trammel method
How to construct an ellipse using the compass method
Application of the ellipse in everyday life
The importance of draftsmanship
The effect of shading and rendering on a drawing

4. Ellipse
Ellipse
Cylinder
Ellipse
Cone

5. Ellipse: Applications
Inside an Atom

6. Activity 25 & 26

7. Trammel Method Activity 25 ½ Minor Axis ½ Major Axis Minor AxisP A B
½ Major Axis P A B P A B
Minor Axis P A B P A B
Major Axis

8. Activity 26 Major Circle Minor Axis ½Major Axis Major Axis F1 F2
60°
30°
Major Axis F1 F2
Minor Circle