San quadrilateral le dà leth paidhir de co-ionnan ri taobh càch a chèile air gach taobh air-loidhne casan


Air casan a ' cuideachadh dhut obrachadh a-mach an sgìre agus perimeter of a quadrilateral.

San quadrilateral tha geometric t-suim (polygon) a bheil na ceithir points (vertices), no triùir a tha collinear, agus ceithir gradients (air gach taobh), gu cunbhalach a ' ceangal na points.
Mhothachadh eadar convex agus nonconvex quadrangles, neo-convex quadrilateral s urrainn dhut a cho-intersecting.
An quadrangle chan eil eadar-ghearr fhèin ris an canar sìmplidh a th ' ann, gu tric fo the term "quadrangle" ' s e a-mhàin sìmplidh quadrilaterals.

***** Sgìre calculation a ' cleachdadh an dòigh diagonal [½×d1d2] *****
Cuir a-steach an faid diagonals:

Sgìre:
***** Sgìre calculation a ' cleachdadh trigonometry: [ab Sin C] *****
Comharraich faid nan taobhan:

Comharraich ceàrn:

Sgìre:
***** Perimeter calculation: [2(a+b)] *****
Comharraich faid nan taobhan:

Perimeter: