YPQ<=a yay ganimu.
QPX=90-a(YPX thrikonaya wishkambayen paridiye apathitha thrikonayaki...YPX <=90)
PLQ<=90-(90-a)=a(PQL thrikonaya rijukoni..PQL<=90..MQL Sparshakaya nisa)
YPQ<=OYP<=a(OYQ sama divi pada thrikonaya)
XYM<=180-a(sarala rekawa matha kona)
XYM<,XLM< paripuraka kona...:XLMY wurtha...