Module 02 lessons~13 min
Introduction to Projection
What projection is, why we need two views and how 2D drawings arise from 3D.
0/2 lessonsUp next
Subject
Descriptive Geometry
Understand space, don’t memorize it. Every construction has an immediate 3D form – you see it first, then you draw it.
- 12 modules
- 20 lessons
- 20 interactive constructions
First lesson: What is projection
A path through space
The modules follow the way they build on each other – from the first projection to curves and surfaces. Each shows how much you have done.
- 0
- 1
Module 12 lessons~16 min
Monge Projection
Top and front views, the ground line x₁₂ and folding the planes into one.
0/2 lessons - 2
- 3
- 4
Module 41 lesson~11 min
Positional Problems
Relative position of points, lines and planes – intersections and parallelism.
0/1 lessons - 5
Module 51 lesson~10 min
Metric Problems
Rotation and rabatment to find true lengths and angles.
0/1 lessons - 6
- 7
Module 71 lesson~13 min
Sections & Intersections
Cutting a solid with a plane and solid–solid intersections.
0/1 lessons - 8
Module 83 lessons~29 min
Axonometry
Isometric and oblique projection for intuitive 3D images.
0/3 lessons - 9
Module 93 lessons~29 min
Elevation Projection
Projection with elevation labels – terrain, slope lines and contours.
0/3 lessons - 10
Module 101 lesson~9 min
Perspective
Central projection, vanishing points and linear perspective.
0/1 lessons - 11
Module 111 lesson~10 min
Curves & Surfaces
Projections of curves and surfaces – cylinder, cone, sphere and surfaces of revolution.
0/1 lessons
Workshop
Free tools where you can construct anything – alongside the lessons, never graded.
- 51All exercisesConstruction exercises in 5 levels, checked automatically.
- Solid BuilderPlace points and say which solid you want – the engine builds it, section included.
- SandboxDynamic construction in Monge projection and 3D – drag points, traces, rabattement, visibility.
- 3D LaboratoryPoints, vectors, planes and solids in a space you can turn around.
- Knowledge mapSee how the modules connect and what you have covered.