Update README.md

Author: ws-garcia

README.md

@@ -91,8 +91,40 @@ Since the magnitude of the segments _OP_ and _OQ_ must be the same, the `FZERO`
 ```vb
 x = 3.14410480351349; Area = 11.6016094276853
 ```
+Another problem that can be solved is shown in the figure below.
 
-The  UDF `LargestSquareInRATriangle` is a masterpiece demonstrating the power and versatility offered by the latest versions of VBA Expressions!
+![Let's prove it!](/docs/assets/img/ConceptExample.png)
+
+The code solution for the above problem is 
+
+```vb
+Public Function IncribedCSCcentersDistance(squareSide As Double) As String
+    Dim evalHelper As VBAexpressions
+    
+    Set evalHelper = New VBAexpressions
+    With evalHelper
+        .Create "GET('s';" & CStr(squareSide) & ")": .Eval
+        .Create "GET('upper.triangle';{{s;0}};{{s;s}};{{0;s}})", False: .Eval
+        .Create "GET('lower.triangle';{{0;s}};{{0;-s}};{{s;0}})", False: .Eval
+        .Create "GET('ut.inctr';INCENTER(upper.triangle))", False: .Eval
+        .Create "GET('lt.inctr';INCENTER(lower.triangle))", False: .Eval
+        .Create "GET('inc.dist';ROUND(DISTANCE(ut.inctr;lt.inctr);4))", False: .Eval
+        .Create "MROUND(INCIRCLE(upper.triangle);4)", False: .Eval
+        Debug.Print "Inscribed upper circle: " & .result
+        .Create "MROUND(INCIRCLE(lower.triangle);4)", False: .Eval
+        Debug.Print "Inscribed lower circle: " & .result
+        IncribedCSCcentersDistance = .VarValue("inc.dist")
+    End With
+End Function
+```
+After executing the code, in the console is also printed the inscribed circle center point coordinates and radius magnitudes.
+
+```vb
+Inscribed upper circle: {{8.4853;8.4853};{3.5147;3.5147}}
+Inscribed lower circle: {{4.9706;0};{4.9706;4.9706}}
+```
+ 
+These UDF's are masterpieces demonstrating the power and versatility offered by the latest versions of VBA Expressions!
 
 ## Supported expressions
 
@@ -325,12 +357,22 @@ End Sub
 '''
 ''' A={{2;4};{-5;1},{3;-8}};b={{10;-9.5;12}}
 ''' 			 --------------------------------------------------------------------
-''' 		        | Solving overdetermined system of equations using least squares and |
+''' 		    | Solving overdetermined system of equations using least squares and |
 ''' 			| the QR decomposition                                               |
 ''' 			|                                                                    |
 ''' 			| MROUND(LSQRSOLVE(A;b);4) : {{2.6576;-0.1196}}                      |
 ''' 			 --------------------------------------------------------------------
 '''
+'***********************************GEOMETRICAL FUNCTIONS*******************************************************************************
+''' DISTANCE({{3.1441;0}};{{4.45415;3.1441}}) = 3.40611153847022
+''' LINESINTERSECT({{3.1441;0};{0;1.31004}};{{0;3};{-3;3}}) = {{-4.05590916002565;3}}
+''' PARALLEL({{12;0};{0;5}};{{3.1441;0}}) = {{3.1441;0};{0;1.31004166666667}}
+''' PERPENDICULAR({{12;0};{0;5}};{{0;0}}) = {{0;0};{1.77514792899408;4.2603550295858}}
+''' MROUND(BISECTOR({{-4;-2}};{{-2;6}});4) = {{-3;2};{-2;1.75}}
+''' MROUND(INCENTER({{0;0}};{{-4;-2}};{{-2;6}});4) = {{-1.7982;0.7448}}
+''' MROUND(INCIRCLE({{0;0}};{{-4;-2}};{{-2;6}});4) = {{-1.7982;0.7448};{1.4704;1.4704}}
+''' MROUND(CIRCUMCIRCLE({{0;0}};{{-4;-2}};{{-2;6}});4) = {{-3.5714;2.1429};{4.165;4.165}}
+''' MROUND(CIRCLETANG({{-4;3}};SQRT(17);{{2;5}});4) = {{-2.4387;6.8161};{2;5}};{{2;5};{-0.4613;0.8839}}
 '***********************************STATISTICAL FUNCTIONS*******************************************************************************
 ''' ROUND(NORM(0.05);8) = 0.96012239
 ''' ROUND(CHISQ(4;15);8) = 0.99773734
@@ -425,7 +467,7 @@ For issues, feature requests, or questions, please use the issue tracker on GitH
 
 ## Licence
 
-Copyright: © 2022-2024  [W. García](https://github.com/ws-garcia/).
+Copyright: © 2022-2025  [W. García](https://github.com/ws-garcia/).
 
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.