Đề thi HK II Toán 7 - Bắc Ninh 2007 - 2008

s0
cn-nr
eAc
NINH
or
rru
xrEnn
D.rNrr
cn.A.r
LU0NG
NAvr
HQC
2007-2008
PHONG
KT&KD M6n:
TOAN
LoP
7
:::==:::
Ihgj€iaq:
g0ph,frt
(Kh6ngk€
thdt
gian
giao di)
NSdy
thi:
02/05/2008
Bii
1:
(2

dihd
Chsn
c6u
tr6lli
itirng:
1)
Eon
th.uc
2x6
y3
z
c6b0c
dOi
vtri
tflp
hgrp
c5c
bi6n
ln
A) 11;
B)
e;
C)
10
D)
18'
2) Do
thi
hdm
si5

y
:
ax
eti
qua
di6m
A(-3;
2)
n6n
hQ
s6
a
ld
2
-2
c)+;
o)1.
e)T;
B);)
-,z
z'
3)
Tam
giSc ndo
ld
tam
giSc vudng
trong
cbctamgidc
c6

d0
dAi
ba
canh
A)
10;
15;
t2;
B)
s; 13;
12;
C) 7;7;
L0;
D) 3;
a;6'
4)
AABC
cdn
O
A
c6
gdcB:
400. Khi
d6
s5
do
crta
gdc Alir
A)
1o0o;

B)
800;
)
90oi
D)
700'
BAi
2:
G
dihm)
1)
Tinh
gi5
tri
cira bi6u
thrlc
a*
-xy
t4i
x: 3;
y:
-5;
2)
Tim
x bi6t:
a)
2x
-
9
-

-33;
Blri
3:
(1,5
di€m)
b)
lz-zxl=t
.
MQt
m6nh
vuirn
hinh
cht
nhgt
c6
chu
vi
b6ng
100m
vi
ti
s6
gita hai
eanh
cta
n6
le
1
.
Tinh

di6n
tich
ctra
m6nh
vucm
d6.
7
Biri
4:
(j,5
diilm)
Cho
AABC
cdn
6
A
G.ego).Tt
B
vi
C
theo
thri
tr;
k6
BDIAC
(DeAC),
CE
J
AB
(E

e AB).
Gqi
O
ld
giao
di6m
cria
BD
vi CE'
1) Chrmg
minh
MBD
=
MCE;
.
2) Chrmg
minh
AOBC
cdn;
3)
K6
EH
la
tia
phfln
gi6c
clua
goc
BEO
(He

BO),
DK
le tia
ph0n
gi6c cira
g6c
CDO
(Ke
CO).
Chrmg
minh
EH
:
DK.
a) Gqi
I td
giao di6m
EH
vi
DK.
chrmg
minh
ba
di6rn
A,
o,
I
th6ng
hing
Ei

sfim
Al
trarug-