Yuzaga doir masalalarni yechish
![Yuzaga doir masalalarni
yechish](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_1.png)
![Shakl yuzlari :
•
To’g’ri to’rtburchak
yuzi
•
Parallelogramm ;
•
Trapetsiya ;
•
Romb ;
•
To’g’ri burchakli
uchburchak ;
•
Ixtiyoriy uchburchak
•
Kvadart •
S =a*b
•
S = a*h
•
S = (a+b)/2 *h
•
S = 1/2d1*d2
•
S =1/2 a*b
•
S = 1/2a*h
•
S = a*a](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_2.png)
![Formulalar eslab qoling!
•
Kvadrat perimetri
•
To’g’ri to’rtburchak
perimetri ;
Pifagor teoremasi ; •
P= 4a
P = 2(a+b)
c 2
=a 2
+b 2
b 2
=c 2
- a 2](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_3.png)
![Eslab qoling!
•
S = ) )( )( ( c p b p a p p
yarim perimetr](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_4.png)
![Yechish
•
Ber-n : а=24см в = 25см с = 7 см
•
P= (24+25+7)/2 =2884 ) 7 28 )( 25 28 )( 24 28 ( 28 S
b
S
h
2
72. 6
25
84 * 2 2
b
S
h](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_5.png)
![Trapetsiyaning yon tomonlari 9 sm va 12 sm,
asoslari 30 sm va 15 sm, trapetsiya yon
tomonlarining burchagini toping.](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_6.png)
![А DВ С
Н О
30 см.15 см.12 см
. 9 см
. Yechish .
1BH
CD, BOC= ABH ;
2 . ВС D-parallelogramm
ВС
Н D ( trapetsiya xossasidan ),
ВН
С D ( tuzilishiga ko’ra )
Parallelogramm xossasiga ko’ra
ВС=Н D =15 см, BH=CD=12 см,
Demak, ABH : AB=9, BH=12,
AH=15.
9 2
+12 2
=15 2
, 81+144=225
ABH=90 ( Pifagor teoremasiga
ko’ra ) .
BOC= ABH = 90
3. Demak ,
BOC = 90 .
Javob :90
](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_7.png)
![Tayyor chizmalarda mashqlar
1. ABCD - parallelogramm . Topish kerak : ВЕ.
A CB
D
E45 4](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_8.png)
![3. DE || АС. Topish kerak : AC .
AB
CD E6 10](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_9.png)
![Uchburchak tomoni mos ravishda 5, 6,
teng bo’lsa, uchburchak yuzini toping11](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_10.png)
![5. ABCD - Trapegtsiya . Topish
kerak : CF .
A B C
D
E F4 30 ](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_11.png)
![6. Topish kerak : BD.
A B
CD8
6](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_12.png)
![8. Topish kerak : BD ; AC .](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_13.png)
![Teng yonli uchburchakning tomoni 17
sm, asos burchagiga o'tkazilgan
bissektrisasi 15 sm.Uchburchakning
yuzi va perimetrini toping.](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_14.png)
![Mustaqil ish
2 tur
17 1. Topish kerak :
trapetsiya yuzi .I variant II variant
20
Uchburchaklarning ikki tomoni
10 и 12 sm , Ular orasidag
burchak 45°.
Uchburchakning yuzini toping .5
13
АB C
D
А B C
D
Uchburchaklarning ikki
tomoni 1 2 и 8 sm , Ular
orasidag 12 и 8 см, Ular
orasidag burchak 45°.
Uchburchakning yuzini
toping.9 15](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_15.png)
![Foydalanilgan adabiyotlar :
МОБУ « Новочеркасская СОШ»
Булдакова Л.П
Ранько Елена Алексеевна
учитель начальных классов
МАОУ лицей №21
г. Иваново](/data/documents/7aeac64d-d92c-491b-825e-d05c6a3ce02a/page_16.png)
Yuzaga doir masalalarni yechish
Shakl yuzlari : • To’g’ri to’rtburchak yuzi • Parallelogramm ; • Trapetsiya ; • Romb ; • To’g’ri burchakli uchburchak ; • Ixtiyoriy uchburchak • Kvadart • S =a*b • S = a*h • S = (a+b)/2 *h • S = 1/2d1*d2 • S =1/2 a*b • S = 1/2a*h • S = a*a
Formulalar eslab qoling! • Kvadrat perimetri • To’g’ri to’rtburchak perimetri ; Pifagor teoremasi ; • P= 4a P = 2(a+b) c 2 =a 2 +b 2 b 2 =c 2 - a 2
Eslab qoling! • S = ) )( )( ( c p b p a p p yarim perimetr
Yechish • Ber-n : а=24см в = 25см с = 7 см • P= (24+25+7)/2 =2884 ) 7 28 )( 25 28 )( 24 28 ( 28 S b S h 2 72. 6 25 84 * 2 2 b S h