Question 1109311
.
There is this free of charge online textbook on Geometry

&nbsp;&nbsp;&nbsp;&nbsp;<A HREF=https://www.algebra.com/algebra/homework/Triangles/GEOMETRY-your-online-textbook.lesson>GEOMETRY - YOUR ONLINE TEXTBOOK</A> 

in this site.


Read the lessons from there.  &nbsp;I extracted here first &nbsp;7&nbsp; lessons for you to start.

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Angles/Angles-basics.lesson>Angles basics</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Angles/Vertical-Angles-.lesson>Vertical angles</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Angles/Parallel-lines.lesson>Parallel lines</A>


&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Triangles/Sum-of-the-interior-angles-of-a-triangle.lesson>Sum of the interior angles of a triangle</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Triangles/Congruence-tests-for-triangles.lesson>Congruence tests for triangles</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Triangles/Problems-on-congruence-tests-for-triangles.lesson>Problems on congruence tests for triangles</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/word/geometry/Problems-on-congruence-tests-for-triangles-2.lesson>Problems on congruence tests for triangles-2</A>


When you complete reading these starting &nbsp;(introductory)&nbsp; lessons, &nbsp;read the next lessons following the Table of Contents.


Your understanding on what is the proof in Geometry will grow dramatically.


Beside of it, &nbsp;I hope you will get a fun reading these new style for you lessons.