N tara ai hkrang n bung ai lamu ga jarit hpe sawn la ai
Chyeju hte shadawn shadang hpe meter hku madun u
A B,
B C,
C D,
D A - lamu ga jarit a maga mi na shadawn shadang ni
U - dingdung angle shara
Dai hku sawn la ai a marang e, dai program gaw dai shara a lamu ga jarit, n chye ai angle ni hte diagonal sizes ni hpe dawdan ya na re.