Conceptintro
Orientation test
Also called ccw test, ccw-test, cross product sign test, cross-product-sign-test, turn test, turn-test.
The sign of a 2D cross product that tells whether three points make a left turn, right turn, or are collinear.
The sign of a 2D cross product that tells whether three points make a left turn, right turn, or are collinear.
About this page
The build computes these levels from the evidence in the repository. Each row says what the next level needs. Read what the levels mean.
| Ladder | Level | What the next level needs |
|---|---|---|
| Human proof | H0 no proof |
|
| Lean | L0 no Lean part |
|
| Visual | V0 none |
|
| Writing | W0 stub |
|
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