Shape 

Copyright David & Cynthia Thomas, 2009

Drawing 3-Dimensional Objects--Directed Activity: 2-Point Perspective of a House

Focus	Explore a 2-point perspective model of a house.
Technologies	The Geometers Sketchpad and model 6_House.gsp.
Background	Depending on your location relative to a house, the view you get of the box is different.  Figure 6.16: 2-Point Perspective of a House
Tasks	1. Attempt to move each of the vertices of the house.  Interpret the changes in view as changes in your location as an observer. 2. Move the Vanishing Points right and left.  Interpret the changes in view as changes in your location as an observer. 3. Move the Horizon Line up and down.  Interpret the changes in view as changes in your location as an observer.  4. What are the limitations of this model?  Under what conditions does it fail?