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Littafin yana gabatar da masu lissafin layi da ƙididdiga don ƙididdige yanki na rhombus bisa ga bayanan farko daban-daban: ta tsawon gefen da tsayin da aka zana zuwa gare shi; ta bangarorin da kusurwar da ke tsakaninsu; ta tsawon diagonals.
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Lissafin yanki
Umurnai don amfani: shigar da sanannun dabi'u, sannan danna maɓallin "Lissafi". A sakamakon haka, za a ƙididdige yanki na adadi tare da la'akari da ƙayyadaddun bayanai.
1. Ta gefe da tsawo
Ƙididdigar ƙididdiga
S = a ⋅ h
2. Ta bangarorin da kusurwar da ke tsakanin su
Ƙididdigar ƙididdiga
S = a2 ⋅ ba tare da α
3. Ta hanyar diagonal
Ƙididdigar ƙididdiga
