Yongeza weenceke
 
Shenxisa imke weenceke

Yomjikelezo trapezoid, iingcingo sokubala ifomula

Yomjikelezo trapezoid, iingcingo ifomula sokubala ikuvumela ukuba ufumane yomjikelezo trapezoid, nge formula, usebenzisa ubude onke amacala trapezoid.
a:   b:   c:   d:  

Yomjikelezo trapezoid

Trapezoid yi Ikwadrilatherali eneepoligoni ubuncinane esinye isibini kumacala ngaxeshanye, ngokuba neziseko trapezoid, kunye namanye amacala amabini ngokuba imilenze okanye amacala akude.
Formula for odonga kanxantathu: P=a+b+c+d,
apho, b, c, d - emacaleni trapezoid