Question 928833
{{{OPS=40}}}
If I bisect {{{PS}}} through {{{O}}} creating point {{{M}}} in {{{PS}}}, it splits the {{{OPS}}} equally to form {{{MOP}}} and {{{MOS}}}.
{{{MOP=MOS=20}}}
and
{{{MOP+OPS+90=180}}}
{{{MOP+OPS=90}}}
{{{20+OPS=90}}}
{{{OPS=70}}}