Obtuse akụkụ: Description na e ji mara

Triangle - a geometric ọgụgụ na-enwe atọ interconnected edoghi ihe na-adịghị na-edina na a otu akara na ụgbọelu. The vertices nke triangle - n'ókè ke ukot nke akụkụ, na edoghi ejikọta ha, a na-akpọ n'akụkụ nke triangle. Iji chọpụta ebe nke a na ọnụ ọgụgụ, mgbe mgbe na-eji triangle ime ohere.

nhazi ọkwa

E wezụga triangles na ahaghị n'akụkụ, e nwere isosceles, ie, na-enwe abụọ yiri n'akụkụ. Ha na-akpọ mpụta, na ọzọ n'akụkụ - na isi ọgụgụ. E nwere ihe ọzọ ụdị polygons - equilateral. All atọ nke ha n'akụkụ na-hà n'ogologo.

N'ihi triangles pụta ụwa ogo n'ihe usoro. A na ọnụ ọgụgụ nwere dị iche iche akụkụ, ya mere ha na-nkewa dị ka ndị a:

• Akụkụ anọ - inwe ihe n'akuku nke 90 degrees. The abụọ n'akụkụ n'akụkụ aka n'akụkụ, na-akpọ ụkwụ, na nke atọ - na hypotenuse;
• Nkọ ihu - a triangle, na-enwe niile nkọ akụkụ adịghị nnọọ 90 degrees;
• Obtuse - otu n'akuku ukwuu karịa 90 degrees.

Definition na afọ nke triangle

Dị ka e kwuworo, na triangle - bụ otu ụdị polygon enwe atọ vertices na otu ogologo, ha dị n'otu. Na-egosi na akara na-abụkarị otu: nkuku - obere Latin akwụkwọ ozi, na ndị na-abụghị akụkụ nke ọ bụla - kwekọrọ na a isi obodo leta.

Ọ bụrụ na ị tinye elu niile akụkụ nke a triangle, ọ ga-ikere 180 degrees. Iji chọpụta n'ime akuku nke mkpa 180 ogo wepụ ịdị ukwuu nke mpụga n'akuku nke triangle. Iji chọpụta ihe bụ hà na n'akuku nke bụ n'èzí, ọ dị mkpa iji tinye abụọ ikewapụ ya site n'akuku nke n'ime.

Onye ọ bụla triangle nwere ya nnukwu ma ọ bụ obtuse akụkụ, na ncherita-iru nnukwu n'akuku bụ kasị ukwuu n'akụkụ. Ọ bụrụ na ndị ogologo n'etiti vertices bụ otu, karị, na onye ọ bụla n'akuku bụ 60 degrees.

Obtuse triangle

Obtuse n'akuku nke a triangle bụ mgbe ukwuu karịa a 90 ogo n'akuku, ma nta-ọnụ ọgụgụ. N'ihi ya, obtuse n'akuku bụ site 90 180 degrees.

Ajụjụ na-ebilite ma e nwere ihe karịrị otu obtuse n'akuku a ọnụ ọgụgụ? Azịza ya dabeere n'elu: dịghị, n'ihi na nchikota nke akụkụ kwesịrị erughị ⁰ 180. Ọ bụrụ na abụọ akụkụ ga-abụ, ihe atụ, na 95 degrees, nke-atọ nanị dịghị ebe.

Abụọ obtuse polygon bụ:

• Ọ bụrụ na ha abụọ bụ ndị hà na n'akuku nke ha n'akụkụ dị therebetween;
• ma ọ bụrụ na otu akụkụ ya, abụọ akụkụ ndị na-esote ya, bụ hà;
• Ọ bụrụ na atọ ọzọ obtuse triangles hà.

Ịtụnanya edoghi obtuse triangle

All triangles na obtuse akụkụ, e nwere a akara na-akpọ n'ụzọ dị ịrịba ama. Nke mbụ n'ime ha - elu. Ọ bụ a perpendicular si otu vertex ya kwekọrọ ekwekọ n'akụkụ. All elu na-eche ihu ná, nke a na-ezo dị ka orthocenter. The triangle na obtuse akụkụ ọ ga-abụ na mpụga nke udi ya. Ma nkọ nkuku, etiti e dị na triangle.

Ọzọ akara - etiti. Nke a bụ akara adọta si n'ọnụ na kwesịrị ekwesị n'akụkụ nke center. All ekweta etiti na a triangle, na-edebe ha itinye n'ọnọdụ - na etiti nke ike ndọda nke a polygon.

Bisector - akara bisecting ma obtuse akụkụ, na ndị ọzọ. The nrutu nke atọ ndị a edoghi bụ mgbe ikpe naanị na ogugu ma na a kọwara dị ka etiti nke gburugburu ede a triangle.

N'aka nke ya, na etiti nke gburugburu circumscribed banyere ọgụgụ nwere ike enwetara site na atọ n'etiti perpendiculars. Nke a akara, nke a hapụrụ si n'aka ogologo edoghi n'isonyere vertex. Ebe nrutu nke atọ n'etiti perpendiculars nke a triangle enwe obtuse akụkụ, bụ n'èzí ọgụgụ.