Planimetr

Planimetr (az lotini planum — hoi musattah, hamvori va … metr), asbobi matematikiest baroi khele saheh chen kardani masohati ashkoli hamvor va daryoftani qimati adadii integralhoi namudi muayyan. Dar yak nugi fashangi khatkashi Planimetr shtifte nasb ast, ki on tarhi shaklro mekashad, shtifti digar az rui khati tashkildihanda harakat mekunad (nigared rasm).

Planimetri  khatty (tashkildihandaash khati rost), Planimetrii qutbi (tashkildihandaash davra) va Planimetri radiali (tashkildihandaash nuqta) mavjudand. Agar funksiya dar koordinatahoi qutbi doda shuda boshad, Planimetri radiali imkoniyat medihad, ki integralhoi nam udi J gyf yofta shavad: