I poyezd 4 soatda 336 km, avtobus 3 soatda 126 km yo’l bosdi. Avtobusning tezligi poyezd tezligidan necha marta kam? Yechish

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7 – nazorat ishi

I variant

DEK tengyonli uchburchakning DK asosi, EF kesma esa bissektrisasi, DK = 16 sm, . KF, , larni toping.
Berilgan 17 mm, 19 mm va 22 mm ga teng uchta tomoniga ko‘ra uchburchak yasang.

3. Berilgan uchburchakning ikkita bissektrisasini yasang.

II variant

ABC tengyonli uchburchakning AC asosi, BD kesma esa bissektrisasi, AC = 18 sm, . AD, , larni toping.
Berilgan 25 mm, 20 mm va 18 мм ga teng uchta tomoniga ko‘ra uchburchak yasang.

3. Berilgan uchburchakning uchta bissektrisasini yasang.

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