Amakona anayi trapezoid ndi katundu

Izi mawonekedwe zojambula - amakona anayi trapezoid - si a masamu komanso kugawa thupi. Ndipotu, zimene akupatsidwa maphunziro a kusukulu, ndi pafupi ntchito. Mwachitsanzo, podziwa chimene ndi dera la trapezoid amakona anayi, inu mosavuta kupeza matupi a msewu pa kuyenda uniformly zolimira. Kodi kuchita izo? Tsopano tiyeni tione.

Area yeniyeni mitundu ya kanjedza mopitirira m'njira zosiyanasiyana. Ifeyo m'pofunika kudziwa Uwerenge zapansi awiri ndi kutalika. Otsiriza ndi imodzi mwa mbali atagona pa mlingo woyenerera. Total, chifukwa anakhumba kuchita masamu motere:

S = (a + b) * H / 2

Kumene, kudalira izi sanatengedwe kuchokera kudenga. N'zotheka kuti munthu akudziwa za midline, umene uli ndi zonse ndi amakona anayi trapezoid. Ngati zinaperekedwa mwa kalata m, ndiye mtengo angapezeke monga: mamita = (a + b) / 2. Maganizo Wopanda chidutswa pansi. Mutapeza chinachake monga kutalika kwa bokosi kudziwika. Ndi pa kuchepetsa izi chabe chithunzi cha choyamba yafupika kudalira anamanga. Nthawi zambiri, chilinganizo lalikulu amakona anayi trapezoid zikusonyeza kuthekera m'malo a H (okwera) pa mbali kutalika pa makona a madigiri 90. Ena ayenera kumvetsa kuti iyesedwa yolungama ndi kusasiyana pakati zedi izi.

Pachiyambi, takambirana kale n'zotheka ntchito mfundo chithunzi mu sayansi. Makamaka, ophunzira ayenera kukhala odziwika bwino mfundo uniformly inapita apaulendo. Amakona anayi trapezoid ndi choncho pamene mathamangidwe koyamba ndi ziro, mathamangitsidwe ndi zonse. Ngati amaika ntchito chofunika kuwerengetsa njira anayendayenda zimenezo, n'zotheka ntchito njira kupeza lalikulu. Variable "a" ndigwisire potanthauza ulendo wonse. Mwakucimbidza ayenera kuti ife tikuchita ndondomeko Cartesian. Ndiye, "b" amatanthauza nthawi imene anali liwiro pazipita. Choncho, ngati amakhalabe choncho mpaka mapeto a uniformly inapita zoyenda, ndiye B = 0. H kwa mtengo timalandira mtengo odekha. Pambuyo m'malo makhalidwe amene ndimalandira njira, monga kuchita masamu ndi chilinganizo S = V pafupifupi * T. Tsopano inu mukudziwa momwe mungathandizire amakona anayi trapezoid.

Kuti athetse mavuto ayenera kudziwa chabe chilinganizo pang'ono chithunzi anapatsidwa. Mwachitsanzo, Uwerenge kumathandiza kupeza ngodya zabwino pa mbali okonda ndi madigiri 180. Opendekera ndi ulemu wina wa mbali ndi hypotenuse wa kansalu bwino ndi miyendo ya ndizodziwikiratu. Kumbukirani kuti si mu quadrangle aliyense, makamaka trapezoid amakona anayi, bwalo akhoza alembedwa. The Maphunziro wapatsidwa matanthauzo ambiri, koma chinthu chimodzi mukufuna kupha. Mwachitsanzo, chakuti amakona anayi trapezoid ndi zinthu zonse mwa nthawi zonse, komanso ali ndi mbali zina. Kuganiza kuti m'munsi ndi zinayi, mbali lateral - atatu, ndi opendekera kulumikiza iwo - 5. Mwa Lingaliro Lovomerezeka Pythagorean, 3 * 3 + 4 * 4 = 5 5. Izi zikusonyeza kuti ndi amakona anayi trapezoid.

Choncho Mwakumana ndi fanizo lina zojambula. Chilinganizo kupeza malo ake si kuphunzira, ndi okwanira kumvetsa mfundo ya mawerengedwe.