Contents
A cikin wannan ɗaba'ar, zamuyi la'akari da dabaru daban-daban waɗanda zaku iya ƙididdige tsayin trapezoid rectangular.
Ka tuna cewa daya daga cikin bangarorin yana tsaye zuwa tushe, sabili da haka kuma shine tsayin adadi.
Nemo tsayin trapezoid rectangular
Ta hanyar tsayin bangarorin
Sanin tsayin tushe guda biyu da babban gefen trapezoid rectangular, zaku iya samun tsayinsa (ko ƙaramin gefen):
Wannan dabarar ta biyo baya daga . A wannan yanayin, tsawo h ita ce ƙafar da ba a sani ba na triangle dama wanda hypotenuse yake d, da ƙafar da aka sani - bambance-bambancen tushe, watau (ab).
Ta hanyar tushe da kusurwar da ke kusa
Idan an ba da tsayin sansanonin da kowane kusurwoyi masu ƙarfi kusa da su, to ana iya ƙididdige tsayin trapezoid rectangular ta amfani da dabara:
Ta gefe da kusurwar kusa
Idan an san tsawon gefen gefe na trapezoid rectangular da kusurwar da ke kusa da shi (kowane), zai yiwu a sami tsayin adadi ta wannan hanya:
lura: Ta amfani da wannan dabara, zaku iya, a tsakanin sauran abubuwa, tabbatar da cewa ƙaramin gefen shine tsayin trapezoid:
Ta hanyar diagonals da kusurwar da ke tsakaninsu
Idan har an san tsawon sansanonin trapezoid rectangular, diagonals da kusurwar da ke tsakanin su, ana iya ƙididdige tsayin adadi kamar haka:
Idan maimakon jimlar sansanonin, an san tsawon layin tsakiya, to, dabarar za ta ɗauki nau'in:
m - layin tsakiya, wanda yake daidai da rabin adadin sansanonin, wataum = ku (a+b)/2.
Ta wurin yanki da filaye
Idan kun san yankin trapezoid rectangular da tsawon sansanonin sa (ko tsakiyar layi), zaku iya samun tsayi ta wannan hanyar:
