Descriptive Geometry · Module 1

Monge Projection

Two planes, one point

Top and front views, the ground line x₁₂ and folding the planes into one.

2 lessons
~16 min
2 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~9 minContinue here
Point in Monge projection
Folding simulator: watch π₁ rotate about x₁₂ to form the drawing.
2
Lesson 2High school~7 min
Two points and the ordinate
Why the top and front views share a vertical ordinate – and how that compares two points.