variant uchburchakning bitta ichki burchagi 80°, qolgan burchaklari 3: nisbatda. Uchburchakning noma’lum ikkita burchagini toping
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7 v geometriya (1)[1]
1-VARIANT 1. Uchburchakning bitta ichki burchagi 80°, qolgan burchaklari 3:7 nisbatda. Uchburchakning noma’lum ikkita burchagini toping. 2. Quyidagi rasmda 𝑎//𝑏 bo’lsa, 𝑥 ni toping. 3. To’g’ri burchakli uchburchakning bitta o’tkir burchagi ikkinchisidan 2 marta katta. Uning kichik tomoni 15 sm bo’lsa, katta tomonini toping. 4. Teng yonli uchburchakning uchidagi tashqi burchagi 70° ga teng bo’lsa, uning ichki burchaklarini toping. 5. Quyidagi rasmda AC=BD bo’lsa BAC va CDB uchburchaklar tengligini isbotlang: ______________________________________________________________________ 2-VARIANT 1. Uchburchakning ichki burchaklari 3:4:11 nisbtda bo’lsa, burchaklarini toping. 2. Uchburchakning bitta tashqi burchagi 150 ° ga teng, shu burchakka qo’shni bo’lmagan ikkita ichki burchagi 4:6 nisbatda bo’lsa, uchburchakning ichki burchaklarini toping. 3. To’g’ri burchakli uchburchakning gipotenuzasi uzunligi 20 sm ga, bitta kateti uzunligi esa 10 sm ga teng bo’lsa, uchburchakning ichki burchaklarini toping. 4. To’g’ri burchakli ABC uchburchakning to’g’ri burchagi uchidan CD balandlik tushirilgan. Agar ° bo’lsa, CDB burchakni toping. 5. Quyidagi rasmda 1-VARIANT 1. Uchburchakning bitta ichki burchagi 80°, qolgan burchaklari 3:7 nisbatda. Uchburchakning noma’lum ikkita burchagini toping. 2. Quyidagi rasmda 𝑎//𝑏 bo’lsa, 𝑥 ni toping. 3. To’g’ri burchakli uchburchakning bitta o’tkir burchagi ikkinchisidan 2 marta katta. Uning kichik tomoni 15 sm bo’lsa, katta tomonini toping. 4. Teng yonli uchburchakning uchidagi tashqi burchagi 70° ga teng bo’lsa, uning ichki burchaklarini toping. 5. Quyidagi rasmda AC=BD bo’lsa BAC va CDB uchburchaklar tengligini isbotlang: ______________________________________________________________________ 2-VARIANT 1. Uchburchakning ichki burchaklari 3:4:11 nisbtda bo’lsa, burchaklarini toping. 2. Uchburchakning bitta tashqi burchagi 150 ° ga teng, shu burchakka qo’shni bo’lmagan ikkita ichki burchagi 4:6 nisbatda bo’lsa, uchburchakning ichki burchaklarini toping. 3. To’g’ri burchakli uchburchakning gipotenuzasi uzunligi 20 sm ga, bitta kateti uzunligi esa 10 sm ga teng bo’lsa, uchburchakning ichki burchaklarini toping. 4. To’g’ri burchakli ABC uchburchakning to’g’ri burchagi uchidan CD balandlik tushirilgan. Agar ° bo’lsa, CDB burchakni toping. 5. Quyidagi rasmda Download 252.22 Kb. Do'stlaringiz bilan baham: |
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