Teng yonli uchburchakning ikki yon tomoni 6 sm bo‘lsa, asos tomoni 8 sm. Uchburchakning perimetri nechchi?, 20, 18, 16, 24, Teng yonli to`g`ri burchakli uchburchakda yon tomon uzunligi 5 sm bo‘lsa, burchaklari qanday?, 45°, 45°, 90°, 70°, 70°, 40°, 60°, 60°, 60°, 50°, 50°, 80°, Teng yonli uchburchakda asos tomoni 10 sm, yon tomonlari har biri 13 sm. Uchburchak perimetri nechchi?, 36, 26, 30, 20, Teng yonli uchburchakning yon tomoni b sm, asos tomoni a sm. Uchburchak yuzini qanday hisoblash mumkin?, Yuzani hisoblash uchun balandlikni topib, asosga ko‘paytiramiz va 2 ga bo‘lamiz, Faqat perimetrni topamiz, Yuzani topa olmaymiz, Balandlik asosga teng, Teng yonli uchburchakda har ikki yon tomoni 20 sm, asos tomoni 24 sm. Uchburchakning balandligi nechchi?, 16, 26, 17, 9, Teng yonli uchburchakning balandligi 12 sm, asos tomoni 10 sm. Uchburchak yuzasi nechchi?, 60, 55, 65, 70, Teng yonli uchburchakning yon tomoni 8,5 sm, asos tomoni 9 sm. Uning perimetri nechchi?, 26, 24, 28, 22, Teng yonli uchburchakning burchaklari nechchi?, Ikkita asosdagi burchaklar teng va har biri 70°, uchidagi burchak 40°, Ikkita burchak teng va har biri 60°, asos burchak 50°, Ikkita burchak teng va har biri 45°, asos burchak 80°, Barchasi teng 60°, Teng yonli uchburchakda asos tomoni 16 sm, yon tomonlari har biri 10 sm. Uchburchak balandligi nechchi?, 6, 5, 7, 4, Teng yonli uchburchakda asos tomoni 14 sm, balandligi 12 sm. Uchburchak yuzasi nechchi?, 84, 70, 72, 90, Teng yonli uchburchakda asos tomoni 48 sm, yon tomoni 26 sm. Uchburchak balandligini toping., 10, 12, 14, 16, Teng yonli uchburchakda asos tomoni 24 sm, balandligi 16 sm. Yon tomon uzunligini toping., 20, 18, 15, 19, Teng yonli uchburchak yuzasi 96 sm², asos tomoni 16 sm. Balandligini toping., 12, 10, 14, 15, Teng yonli uchburchakda balandligi 15 sm, yon tomonlari har biri 17 sm. Asos tomonini toping, 16, 22, 18, 20, Teng yonli uchburchakda perimetri 54 sm, asos tomoni 16 sm. Yon tomon uzunligini toping., 19, 18, 17, 22, Teng yonli uchburchakda asos tomoni 20 sm, yon tomonlari har biri 26 sm. Uchburchak yuzasini toping., 240, 320, 300, 315, Teng yonli uchburchakda yon tomoni 15 sm, balandligi 12 sm. Asos tomonini toping., 18, 20, 16, 14, Teng yonli uchburchakda asos tomoni 40 sm, balandligi 21 sm. Uchburchak yuzasini toping., 420, 400, 430, 410, Teng yonli uchburchakda asos tomoni 18 sm, yon tomoni 20 sm. Burchaklarini toping (taxminan)., Ikkita burchak ~70°, asos burchak ~40°, Ikkita burchak ~60°, asos burchak ~60°, Ikkita burchak ~45°, asos burchak ~90°, Ikkita burchak ~80°, asos burchak ~20°, Teng yonli uchburchakning yon tomonlari 21 sm, asos tomoni 24 sm. Perimetrini toping., 66, 65, 63, 64, Teng yonli uchburchak tomonlari 5:3 nisbatda. Perimetri 143 bo'lsa, asosini toping., 33, 65, 55, 39 yoki 63, ABC teng yonli uchburchakning BC asosida D nuqta olingan. Agar AB=AC=20, BD=21, DC= 11 bo`lsa, AD kesma uzunligini toping., 13, 12, 14, 10, Teng yonli uchburchak uchidagi burchagi α, asosi a ga teng. Uchburchakni yuzini toping., (a^2 ctg α/2)/4, (a^2 tg α/2)/4, (a^2 sin α/2)/4, (a^2 cos α/2)/4, Teng yonli uchidagi burchagi α ga, yuzi S ga teng bo`lsa, uchburchak asosini toping., 2√(Stg α/2), 2√(Sctg α/2), 2√(Scos α/2), 2√(Ssin α/2), Teng yonli uchburchakka ichki chizilgan aylana radiusi r. Asosiga o`tkazilgan balandlik aylana bilan kesishib 1:2 nisbatda bo`linadi. Uchburchak yuzini toping., 3√3 r^2, 3√2 r^2, 2√3 r^2, 2√2 r^2, Teng yonli uchburchak asosidagi burchagi sinusi uchidagi burchagi kosinusidan 3marta katta. Asosidagi burchagi sinusini toping., (√73+1)/12, (√73-1)/12, (√43+1)/16, (√43-1)/16, Teng yonli uchburchak asosidagi burchagi sinusi va uchidagi burchagi kosinusi yig’indisi 0 ga teng. Uning asosidagi burchagi necha gradus?, 30, 45, 60, 15, Teng yonli to`g`ri burchakli uchburchak katetlariga o`tkazilgan medianalar orasidagi o`tkir burchakni toping., arccos 0,8, arccos 0,6, arccos 0,1, arccos 0,3, Asosi 8, uchidagi burchagi 120 gradus bo`lgan teng yonli uchburchakka ikki uchi asosda, ikki uchi esa yon tomonlarda yotuvchi eng katta yuzali to`g`ri to`rtburchak ichki chizilgan. Shu to`g`ri to`rtburchak yuzini toping., (8√3)/3, (8√3)/9, (8√2)/3, (8√5)/3, Tomonlari 15,15,18 bo`lgan teng yonli uchburchakka eng katta yuzaga ega bo`lgan parallelogramm shunday ichki chizilganki, uning bir burchagi uchburchakning asosidagi burchagi bilan umumiy. Parallelogramm yuzini toping., 54, 56, 64, 58, Qaysi shartda ikki uchburchak teng bo‘ladi?, Ikkita burchak va ularning orasidagi tomon teng bo‘lsa, Faqat bitta tomoni teng bo‘lsa, Faqat bitta burchagi teng bo‘lsa, Tomonlari proporsional bo‘lsa, Agar uchburchaklarda ∠A = ∠D va ∠B = ∠E hamda AB = DE bo‘lsa, ularning holati qanday?, Teng uchburchaklar, Teng emas, O‘xshash uchburchaklar, Farqli uchburchaklar, Uchburchaklarda ikki burchak va ular orasidagi tomon teng bo‘lsa, bu qanday alomat?, Ikkinchi tenglik alomati, Birinchi tenglik alomati, Uchinchi tenglik alomati, O‘xshashlik alomati, Uchburchaklar tengligining ikkinchi alomati qaysi elementlarga asoslanadi?, Ikkita burchak va ularning orasidagi tomon, Uchta tomon, Tomon va ikkita burchak, Burchaklar, Uchburchaklarda ikki burchak teng va ular orasidagi tomon teng bo‘lsa, ularning uchinchi burchaklari qanday?, Teng bo‘ladi, Farq qiladi, Kattaroq bo‘ladi, Kichikroq bo‘ladi, Agar uchburchak ABV va DEFda ∠A=∠D, ∠B=∠E, va AB=DE bo‘lsa, ular qanday?, Teng, O‘xshash, Teng emas, Farqli, Ikkinchi tenglik alomati qaysi uchburchaklarni teng deb hisoblashda ishlatiladi?, Ikkita burchak va ular orasidagi tomon teng bo‘lgan uchburchaklar, Uch tomon teng bo‘lgan uchburchaklar, Faqat burchaklari teng bo‘lgan uchburchaklar, Tomonlari proporsional bo‘lgan uchburchaklar, Agar uchburchakdagi ∠C va ∠F teng, va ular orasidagi tomon BC va EF teng bo‘lsa, ularning holati qanday?, Teng, Teng emas, O‘xshash, Farqli, Uchburchaklar tengligining ikkinchi alomati nechta elementning tengligi talab qiladi?, 3, 2, 1, 4, Ikkinchi alomaga ko‘ra, uchburchaklarni teng deb hisoblash uchun talab qilinadigan elementlar qaysi?, Ikkita burchak va ularning orasidagi tomon, Ikkita tomon va ularning orasidagi burchak, Uchta tomon, ) Ikkita burchak va ularga qarshi tomon, To’g’ri burchakli uchburchakning bir kateti ikkinchisidan 5 sm ga uzun, lekin gipotenuzadan 5 sm ga qisqa bo’lsa, gipotenuzani toping., 25, 20, 15, 30, To’g’ri burchakli uchburchakning o’tkir burchaklaridan chiqqan medianalari 12 va 16 bo’lsa, gipotenuzani toping., 8√5, 4√5, 6√5, 10√5, To’g’ri burchakli uchburchakka ichki chizligan aylana radiusi 4 ga, tashqi chizilgan aylana radiusi 8 ga teng bo’lsa, uchburchak yuzini toping., 80, 72, 84, 60, To’g’ri burchakli uchburchakka ichki chizilgan aylana gipotenuzani 2:3 nisbatda bo’ladi. Agar uchburchak perimetri 72 bo’lsa, katetlar yig’indisini toping., 42, 36, 48, 54, To’g’ri burchakli uchburchak katetlari 18 va 24. Unga ichki va tashqi chizilgan aylanalar markazlari orasidagi masofani toping., 3√5, 5 √3, 4√2, 4√5, To’g’ri burchakli uchburchak gipotenuzasiga tushirilgan balandligi h. Katta katetga tushirilgan mediana uzunligining eng kichik qiymatini toping., 1,5h, 1,2h, h, √2h, To’g’ri burchakli uchburchak to’g’ri burchagidan chiqarilgan bissektrisasi va mediana mos ravishda 4 va 30 ga teng bo’lsa, uchburchak yuzini toping., 20, 2 √15, 2√30, 12, To’g’ri burchakli uchburchakning kichik burchagi a ga teng. Unga doira shunday ichki chizilganki, u gipotenuza o’rtasiga urinadi va kichik katet o’rtasidan kesib o’tadi. Doira va uchburchak yuzlari nisbatini toping., πcosa/(8〖sin〗^3 a), πsina/(8〖cos〗^3 a), πsin2a/8, πcos2a/8, To’g’ri burchakli uchburchakka ichki chizilgan aylana markazidan gipotenuza uchlarigacha masofalar √3 va √6 ga teng. Gipotenuza uzunligini toping., √15, √10, 4, 2√6, ABC to’g’ri burchakli uchburchak o’tkir burchaklaridan AM va BN medianalar o’tkazilgan. Ular O nuqtada kesishadi. Agar S_NCMO=S bo'lsa, S_ABC=?, 3S, 2S, 4S, 1.5S

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