Muchinyorwa chino, tichatarisa imwe yedzidziso huru mukirasi 7 geometry - nezvekunze kwekona yegonyo. Tichaongororawo mienzaniso yekugadzirisa matambudziko kuitira kubatanidza mashoko ataurwa.
Tsanangudzo yekona yekunze
Kutanga, ngatirangarirei kuti kona yekunze chii. Ngatitii tine katatu:
Pedyo nekona yemukati (λ) kona yegonyo pane vertex imwe chete zvekunze. Mumufananidzo wedu, inoratidzwa netsamba γ.
Izvo:
- huwandu hwemakona aya madhigirii 180, kureva c+ λ = 180° (pfuma yekona yekunze);
- 0 и 0.
Chirevo che theorem
Kona yekunze yegonyo yakaenzana nehuwandu hwemakona maviri egonyo asina kudhumirana nawo.
c = a + b
Kubva pane iyi theorem zvinotevera kuti kona yekunze yekona yekona yakakura kudarika chero ipi zvayo yemukati makona isiri pedyo nayo.
Mienzaniso yemabasa
Basa 1
Triangle inopiwa umo kukosha kwemakona maviri anozivikanwa - 45 ° uye 58 °. Tsvaga kona yekunze yakatarisana nekona isingazivikanwe yekona yegonyo.
mhinduro
Tichishandisa chimiro che theorem, tinowana: 45 ° + 58 ° = 103 °.
Basa 1
Kona yekunze yegonyo i115°, uye imwe yemakona emukati isiri pedyo i28°. Verenga kukosha kwemakona asara etatu.
mhinduro
Kuti zvive nyore, isu tichashandisa notation inoratidzwa munhamba dziri pamusoro. Iyo inozivikanwa yemukati kona inotorwa se α.
Kubva pane theorem: β = γ – α = 115° – 28° = 87°.
Angle λ iri padyo nekunze, uye nekudaro inoverengerwa neinotevera fomula (inotevera kubva kune pfuma yekona yekunze): λ = 180° – γ = 180° – 115° = 65°.