Descriptive Geometry · Module 9

Elevation Projection

One view with height labels

Projection with elevation labels – terrain, slope lines and contours.

3 lessons
~29 min
3 interactive constructions

Start with the first lesson In the knowledge map

Lessons

Every lesson stands on an interactive construction – turn it, move the points, then build it yourself.

1
Lesson 1High school~7 minContinue here
Graded point
One view and a number beside it – the third dimension is written, not drawn.
2
Lesson 2High school~10 min
Interval and slope of a line
Grading a line, its trace point and the relation i · s = 1.
3
Lesson 3High school~12 min
Contour lines and the slope line
A plane given by its contours – the steeper it is, the closer they run.