Ngatidzidzei nezve angle steel pamwe chete.

Kurongwa kwesimbi yeAngle: Simbi yeAngle inowanzoiswa muzvikamu zvesimbi yeAngle ine mativi akaenzana uye simbi yeAngle ine mativi asina kuenzana zvichienderana nehukuru hwemativi ayo maviri.

I. Simbi yekona ine mativi akaenzana: Simbi yekona ine mativi maviri ehurefu hwakafanana.

II. Simbi ine kona isina kuenzana: Simbi ine kona ine mativi maviri ehurefu hwakasiyana. Simbi ine kona isina kuenzana inopatsanurwazve kuita simbi ine kona isina kuenzana ine ukobvu hwakaenzana uye simbi ine kona isina kuenzana ine ukobvu hwakaenzana zvichibva pamusiyano uripo pakukora kwemativi ayo maviri.

Hunhu hwesimbi yekona:

I. Chimiro chayo chakakombama chinopa simba rakanaka kwazvo rekutakura mutoro.

II. Nesimba rakafanana rekutakura mutoro, simbi yekona inorema zvishoma, inoshandisa zvinhu zvishoma, uye inochengetedza mari.

III. Inopa mukana wekushanda zviri nyore uye inotora nzvimbo shoma.

Nekuda kwekushandisa kwayo mari yakawanda, simbi yekona inoshandiswa zvakanyanya muzvikamu zvakasiyana-siyana zvakaita sekuvaka zvivakwa, mabhiriji, matuneri, nhare dzemagetsi, ngarava, zvinotsigira, uye zvivakwa zvesimbi, zvichibatsira kutsigira kana kugadzirisa zvivakwa.