Question 1094685
<pre>
{{{drawing(400,400,-1.6,1.6,-1.6,1.6,
line(0.95105652,0.30901699,0,1),
line(0,1,-0.95105652,0.30901699),
line(-0.95105652,0.30901699,-0.58778525,-0.80901699),
line(-0.58778525,-0.80901699,0.58778525,-0.80901699),
line(0.58778525,-0.80901699,0.95105652,0.30901699),
locate(-.02,1.13,A),locate(-1.05,.37,B),locate(-.65,-.8,C),
locate(1,.37,E), locate(.61,-.8,D),

line(-0.58778525,-0.80901699,0,1),line(-0.58778525,-0.80901699,0.95105652,0.30901699)) }}}

AB = ED         all sides of regular polygon are equal.

< B = < D       all interior angles of regular polygon are equal.

BC = DC         all sides of regular polygon are equal.

Triangle ABC congruent to triangle CDE      SAS

AC = CE         CPCT

Edwin</pre>