Practice

Six sections. Every question new.

Each question is built from a seed the moment you open it, then checked against the same geometry that produced it. Drill one section until it stops costing you time.

1. 1KeyholesAperturesReading a three-dimensional solid as its exact silhouette from each principal axis.15 of 90→
2. 2Top-Front-EndView RecognitionCross-referencing the dimensions the views share and telling hidden edges from visible ones.15 of 90→
3. 3Angle RankingAngle DiscriminationJudging small angular differences at the vertex while ignoring ray length.15 of 90→
4. 4Hole PunchingPaper FoldingMirroring punches back across every crease, in reverse order.15 of 90→
5. 5Cube CountingCounting exposed faces in a stack where the bottom and every joint stay unpainted.15 of 90→
6. 6Pattern Folding3D Form DevelopmentTracking face adjacency, opposite faces and mark orientation through a fold.15 of 90→