Question 1189350
.



This statement is equivalent to another statement



            In an isosceles triangle the altitude drawn to the base 

                    is the median and the angle bisector.



For this last statement,  you can find its proof in my lesson 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/Triangles/An-altitude-a-median-and-an-angle-bisector-in-the-isosceles-triangle.lesson>An altitude a median and an angle bisector in the isosceles triangle</A>

in this site.



Also, &nbsp;you have 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. 


The referred lesson is the part of this textbook under the topic &nbsp;"<U>Properties of triangles</U>".


Save the link to this online textbook together with its description


Free of charge online textbook in GEOMETRY
https://www.algebra.com/algebra/homework/Triangles/GEOMETRY-your-online-textbook.lesson


to your archive and use it when it is needed.