7-sinf geometriya

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,,uchbuburchakning tashqi burchagining xossasi’’7-sinf geometriya fanidan taqdimot mavzu: uchburchakning tashqi burchagining xossasi 2 faollashtiruvchisavollarvaularga mosjavoblar. 1.hamma medianalari teng bo`lgan uchburchak ? javob: teng tomonli uchburchak. 2.uchburchak tomonlari yig`indisi ? javob:perimetr. 3.o`z o`zini kesmaydigan yopiq siniq chiziq? javob:ko`pburchak. 4.uchburchakning nechta burchagi to`g`ri bo`lishi mumkin? javob:bitta 5.uchburchakning ichki burchaklari yig`indisi necha gradusi? javob:180˚ 6. x=? javob:90˚ 7.burchaklari 100˚,20˚,50˚ bo`lgan uchburchak mavjudmi? javob:yo`q uchburchakning ichki burchagiga qo`shni bo`lgan burchak uchburchakning tashqi burchagi deyiladi. - uchburchakning tashqi burchak -burchaklar uchburchakning ichki burchaklari teorema.uchburchak tashqi burchagi uchburchakning unga qo`shni bo`lmagan ikki ichki burchakagi yig`indisiga teng. ushbu uchburchakda masalalar 1-masala.rasmdagi ma`lumotlar asosida x ni toping. yechish: 1.105˚ li burchakkaga qoshni bo`lgan ichki burchakni topamiz. 180˚-105˚=75˚ 2.150˚ li burchakkaga qoshni bo`lgan ichki burchakni topamiz. 180˚-150˚=30˚ 3.x=180˚-(75˚+30˚)=75˚ javob:75˚. 2-masala.rasmdagi ma`lumotlar asosida x ni toping. yechish: uchburchak tashqi burchagining xossasidan foydalanamiz. x+2x=102˚ 3x=102˚ x=34˚ javob:34˚ t e s t a)o`tkirburchakli. b)o`tmasburchakli. c)to`g`riburchakli. d)aniqlabbo`lmaydi. 1.agaruchburchakningbittatashqiburchagitogribolsa,uningturinianiqlang. javob:c a)120˚,120˚ b)150˚,150˚ c)140˚,140˚ d)100˚,100˚ …

ak teng yonli bo`lishi mumkinmi? 2.odamni kesma deb tasavvur qilamiz. qachon uning soyasi eng qisqa bo`ladi? uyga vazifa 101-betdagi 4-8-masalalar. e`tiboringiz uchun rahmat! image2.png image4.wmf 4 ð image5.wmf 3 , 2 , 1 ð ð ð image3.png oleobject0.bin oleobject1.bin image6.wmf 2 1 4 ð + ð = ð oleobject2.bin image7.png image8.png

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,,uchbuburchakning tashqi burchagining xossasi’’7-sinf geometriya fanidan taqdimot mavzu: uchburchakning tashqi burchagining xossasi 2 faollashtiruvchisavollarvaularga mosjavoblar. 1.hamma medianalari teng bo`lgan uchburchak ? javob: teng tomonli uchburchak. 2.uchburchak tomonlari yig`indisi ? javob:perimetr. 3.o`z o`zini kesmaydigan yopiq siniq chiziq? javob:ko`pburchak. 4.uchburchakning nechta burchagi to`g`ri bo`lishi mumkin? javob:bitta 5.uchburchakning ichki burchaklari yig`indisi necha gradusi? javob:180˚ 6. x=? javob:90˚ 7.burchaklari 100˚,20˚,50˚ bo`lgan uchburchak mavjudmi? javob:yo`q uchburchakning ichki burchagiga qo`shni bo`lgan burchak uchburchakning tashqi burchagi deyiladi. - uchburchakning tashqi burchak -burchaklar uchburchakning ichki burchaklari teorema.uchburchak tashqi...

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