![Illustration of the projective invariance of the cross-ratio τ. In this... | Download Scientific Diagram Illustration of the projective invariance of the cross-ratio τ. In this... | Download Scientific Diagram](https://www.researchgate.net/profile/Lode-Jorissen/publication/267269180/figure/fig5/AS:668511118557191@1536396879673/Illustration-of-the-projective-invariance-of-the-cross-ratio-t-In-this-example_Q320.jpg)
Illustration of the projective invariance of the cross-ratio τ. In this... | Download Scientific Diagram
![Although distances and ratios of distances are not, the cross ratio, defined as AC/BC · BD/AD, is preserved under projection Stock Photo - Alamy Although distances and ratios of distances are not, the cross ratio, defined as AC/BC · BD/AD, is preserved under projection Stock Photo - Alamy](https://c8.alamy.com/comp/BBJ865/although-distances-and-ratios-of-distances-are-not-the-cross-ratio-BBJ865.jpg)
Although distances and ratios of distances are not, the cross ratio, defined as AC/BC · BD/AD, is preserved under projection Stock Photo - Alamy
![CROSS-RATIO - PROJECTIVE GEOMETRY. AXIOMATICS. NON-EUCLIDEAN GEOMETRIES - What Is Mathematics? An Elementary Approach to Ideas and Methods, 2nd Edition (1996) CROSS-RATIO - PROJECTIVE GEOMETRY. AXIOMATICS. NON-EUCLIDEAN GEOMETRIES - What Is Mathematics? An Elementary Approach to Ideas and Methods, 2nd Edition (1996)](https://schoolbag.info/mathematics/elementary/elementary.files/image391.jpg)