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# tkz-elements — for euclidean geometry
-Release 2.00c 2024/02/04
+Release 2.20c 2024/03/26
## Description
-`tkz-elements v.2.00c` is the new version of a library written in lua, allowing to make all the necessary calculations to define the objects of a Euclidean geometry figure. You need to compile with `LuaLaTeX`. With `tkz-elements`, the definitions and calculations are only done with `Lua`.
+`tkz-elements v.2.20c` is the new version of a library written in lua, allowing to make all the necessary calculations to define the objects of a Euclidean geometry figure. You need to compile with `LuaLaTeX`. With `tkz-elements`, the definitions and calculations are only done with `Lua`.
The main possibility of programmation proposed is oriented "object programming" with object classes like point, line, triangle, circle and ellipse. For the moment, once the calculations are done, it is `tkz-euclide` or `TikZ` which allows the drawings.
@@ -60,6 +60,21 @@ An important example `Golden Arbelos` using the package is on the site. All the
are on the site.
## History
+ - version 2.20c
+ - Package:
+ - Added class matrix; methods are mainly of order 2, sometimes of order 3.
+ - Added function solve_quadratic. This function can be used to solve second-degree equations with real or complex numbers.
+ - Added method print for the class point. Example z.A : print ()
+ - Correction of the macro tkzDN. I deleted a spurious space
+ - Modification of vector class attributes. Attributes h and t become head and tail.
+ - The mtx attribute is introduced for point and vector.
+ z.A.mtx represents the column matrix whose coefficients are the point's coordinates. Same for vectors.
+ - Documentation:
+ - Rewriting of all texts
+ - Correction of example: pentagon
+ - Documentation about matrices
+
+
- version 2.00c
- class development “vector”
- added attribute “vec”