1. Incazelo ye maphakathi namandla adonsela phansi
Umzimba oqinile wakhiwe yizinhlayiya eziningi; ngakho-ke, amandla adonsela phansi asebenza kuzo zonke lezi zinhlayiya. Ngamanye amazwi, inhlayiya ngayinye inesisindo sayo. Isikhungo samandla adonsela phansi sento yiphuzu entweni lapho isisindo sazo zonke izingxenye zento sibhekwa njengesiphakathi kuleyo ndawo.
Uma into ifana (ubungako bengxenye ngayinye yento bufana noma into yakhiwe ngezinto ezifanayo) futhi ukuma kwento kuyafana (isibonelo isikwele, unxande, indilinga)
bese isisindo sento sihambisana nendawo ephakathi kwesisindo sento, etholakala enkabeni yento. Kuma-triangles, indawo ephakathi kwesisindo itholakala ku-1/3 h (h = ukuphakama kwe-triangle).
2. Isibalo sesikhungo samandla adonsela phansi
Uma isimo sento silingana futhi into ifana, khona-ke isikhungo samandla adonsela phansi sento sihambisana nesikhungo sesisindo sento,
lapho isikhungo samandla adonsela phansi kanye nesikhungo sobunzima kutholakala phakathi nendawo yento. Ngokuphambene nalokho, uma into ifana kodwa ingalingani, khona-ke indawo yesisindo sento inganqunywa kusetshenziswa ifomula elandelayo.
Izixhumanisi zesisindo sento ku-x-axis:
Izixhumanisi zesisindo sento ku-y-axis:
x = indawo ephakathi nento ku-x-axis, y = indawo ephakathi nento ku-y-axis, A = indawo. Uma into ingama-dimension amathathu, ngaphandle kokunquma izixhumanisi zesisindo sento kuma-x kanye nama-y axes, inquma futhi izixhumanisi zesisindo sento ku-z-axis. Indawo (A) ithathelwa indawo yivolumu (V).
Inkinga yesampula 1.
Nquma izixhumanisi zesikhungo sokudonsa phansi sento efanayo esithombeni ohlangothini!
Isixazululo:
Hlukanisa into ibe izingxenye ezintathu.
A 1 = (10-0)(10-0) = (10)(10) = 100
A2 = (20-10)(30-0) = (10)(30) = 300
A 3 = (30-20)(10-0) = (10)(10) = 100
x 1 = 1⁄2 (10-0) = 1⁄2 (10) = 5
x 2 = 1⁄2 (20-10) + 10 = 1⁄2 (10) + 10 = 5 + 10 = 15
x 3 = 1⁄2 (30-20) + 20 = 1⁄2 (10) + 20 = 5 + 20 = 25
y 1 = 1⁄2 (10-0) = 1⁄2 (10) = 5
y 2 = 1⁄2 (30-0) = 1⁄2 (30) = 15
y 3 = 1⁄2 (10-0) = 1⁄2 (10) = 5
Izixhumanisi zesisindo sento ku-x-axis:
Izixhumanisi zesisindo sento ku-y-axis:
Izixhumanisi zesisindo sento yilezi (15; 11)
Inkinga yesampula 2.
Nquma izixhumanisi zesisindo sento esithombeni!
Isixazululo:
Hlukanisa into ibe izingxenye ezimbili, indawo 1 = isikwele, indawo 2 = unxantathu.
A 1 = (5-1)(3-0) = (4)(3) = 12
A 2 = 1⁄2 (6-0)(9-3) = 1⁄2 (6)(6) = (3)(6) = 18
x 1 = 1⁄2 (5-1) + 1 = 1⁄2 (4) + 1 = 2 + 1 = 3
x 2 = 1⁄2 (6-0) = 1⁄2 (6) = 3
y 1 = 1⁄2 (3-0) = 1⁄2 (3) = 1.5
y 2 = 1/3(9-3) + 3 = 1/3(6) + 3 = 2 + 3 = 5
Izixhumanisi zesisindo sento ku-x-axis:
Izixhumanisi zesisindo sento ku-y-axis:
I-coordinate yesisindo sento ingu-(3; 3.6)
