Chetyrehugolniki geometriya 8_klass
Transcript of Chetyrehugolniki geometriya 8_klass
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Каратанова Марина Николаевна
МОУ СОШ №256 г.Фокино
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1.
Доказать: CAADBC ;
D
СВ
А
ADBCCDAB ;Дано:
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2.
BDèÀÑñåðåäèíàO
Дано:
D С
ВА
CDABCDAB ;
Доказать:
O
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3.
ðàììïàðàëëåëîãABCD
Дано:
Доказать:
43 ,21
А
B C
D
2
13
4
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4. Дано: PMPQMN ,
ðàììïàðàëëåëîãMNPQ Доказать:
М
N P
Q
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5. Дано: 321
ðàììïàðàëëåëîãABCD Доказать:
А
B C
D1
2
3
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6.
Вопрос:ðàììîìïàðàëëåëîãABCDëèßâëÿåòñÿ
Дано:000 18032 ;1103 ;701 ) a
42 ;21 ) á
А
B C
D1
2
3 4
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7.
Найти: DC ,
Дано:
А
B C
D320
ðàììïàðàëëåëîãABCD
?
?
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8.
Найти: PKMP ;
Дано: ðàììïàðàëëåëîãMNKP
М
N K
P
600
2 см
10 см
?
?
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9. Найти:ABCDðàììàïàðàëëåëîãóãëû
А
B C
D
400
250
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10. Дано: ðàììïàðàëëåëîãABCD
Найти: ABCDPА
B
C
D2
3
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11.
Найти: AD
Дано: ðàììïàðàëëåëîãABCD
А
B C
D
2
8
?
K
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12.
Найти:
Дано:
А
B C
D
5
E
ðàììïàðàëëåëîãABCD
AEDPABCD ,
?
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13.
Найти: CDÂÑ ,
Дано:
А
B C
D4 см
5 см
F
N
ðàììïàðàëëåëîãNBFD ñìNBñìAD 5 ,4
?
?
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14.
Найти: MPMN ,
DА
B
М
N
K
P
C
7 см
ðàììïàðàëëåëîãABCD Дано:ñìPMNKP 20
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15.
Найти: DCÀD ,
M
А
B C
D
N
ðàììïàðàëëåëîãBNDM Дано:ñìPBCAB ABCD 18 ,5:4:
?
?
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16.
Найти: ÀÎÂ
А
B C
?
D
Дано:
O
òðàïåöèÿABCD
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17.
Найти: òðàïåöèèóãëû
А
B C
D
Дано: òðàïåöèÿABCD
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18.
Найти:
750
400
Дано: òðàïåöèÿABCD
òðàïåöèèóãëû
А
B C
DE
CDBÅ
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19.
Найти: ÂÑ
А
B C
D
Дано:
1350
450
30
òðàïåöèÿABCD
?
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20.
Найти: ÑÅ
А
B C5
DE
Дано: òðàïåöèÿABCD 15ÀD
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21.
Найти:
Дано: òðàïåöèÿABCD 15ÀD
ABCDP
600
300
А DE
B C5
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22.
Найти: ÑÌ
K
?600
5
Дано: òðàïåöèÿABCÌ 7ÀÌ
А
B C
MP
600
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23.
Найти: Ñ
?500
А
B C
D
Дано: òðàïåöèÿABCD
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24.
Найти: 32ÂÂ
А
?B1
Дано: 44332211 BABABABA
А1
А2
А3
А4
B2B3 B4
4332211 AAAAAAAA ñìAB 204
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25.
А
E
В
С
Дано: ACEF
Найти: ABCP
F
54
12
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26.
B
А
C
D
M
K E
10
Дано: 16 , ADCDBEMK
Найти: AK
?
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27.
B
А
C
D
E
F
400?
Дано: íèêïðÿìîóãîëüABCD
Найти: ABF
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28.
А
B
C D E
F
KM
Дано: íèêïðÿìîóãîëüACEK cìBC 5
Найти: BDFMP
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29.
B
А
C
D
O
600
??
Дано: íèêïðÿìîóãîëüABCD
Найти: ÂÎÑAÎB ,
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30. Дано: íèêïðÿìîóãîëüABCD
Найти: ÀÂAÑ ,
B
А
C
D
O
600
E3
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31.
B
А
C
D
750
6 см
4 см
Дано: íèêïðÿìîóãîëüABCD
Найти: AD
?
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32.
А
B C
D
600
6 см
М
N
Дано: ðîìáABCD
Найти: DNMD
?
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33.
А
B C
D
750
E
?
Дано: ðîìáABCD
Найти: ÑBÅ
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34.
А
B C
D
550
E
?
Дано: ðîìáABCD
Найти: BÀD
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35.
А C
E
D
B
350
?
Дано: ðîìáABCD
Найти: ÀBC
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36.
C
N
B
P
A D
M
K
êâàäðàòABCD Дано:3 ,2 ÀÊñìÐÊ
ABCDPНайти: