Bifitxti t.3thufln voiytheoh0 sOti tq k.[r]
(1)PE{Gr-{G GB & #T'xqrqe{ vgru @
t, q rr."ic F;GH{{r}X q3,0 flrf rn,l
Gisi vdo btii iaftq ckt rnst cla* crni.4,, B, C lao$c fr trw6c c&w tr& loi Cierug Cfrr [, Can bac iiar cfra {-S)'ld:
LL _J C.5vd -5 D.(-5)'kh6ngcScnnb+chai
mfi x<g6req'ERA E{ryc mf N ruAr+c E{QC ?&1? - 2#18
ng#rg: ToAFI LSF 7
TEeli gian: 90 plairt (nh6ng kA tkdt gian giao di)
A{
CSu ? Phdn s,i ndo sau dfly du-oc vi6t dufi d+rag sO tt Ap ph6n hfru h4n?
A 11 B i2 c.25 D j
"'30 ut 7 9 -'25
Cfiu3 Bifitxti t.3thufln voiytheoh0 sOti tq k I"I6u x=-18 thi y=5 Gi6trf criafr.\:
A 3,6 B -3,6 c -90 D 90
C6u Cho lx-ll-; Ki5t qu& nio sau diy dung?
A x=o * *-1 c +.r.| D x-4
Cfiu Ducmg thing MN H dutmg trung k.uc cta do?n tha"g AB khi:
A MN vuOng goc vdi AB C- AB vuOng g6c v6i MN tai trung diim cria MN"
B MN di qua trurag di€m ctra AB D MN vuOng g6c v6i AB tai trung di6m ctia
dE-C6u Cho ADEF - AMNP nii5t D -4ao;E -Zfr, sti cria P li:
A 600 B 400 c 800 D 1200
rr Tu LUaFL(?,$ rri6m)
Cffu (1,5 didm)" ThUc hi$n ph6p tinh:
,316
al '5 35
-+-. -3
Cffu (1,5 itid@ Tim x, bi6t:
a) lzx-+l-!=z b) ( E +2)' =6
.,-Ciu 9 (1,0 di€rn)"
T0ng kiit hqc ki I, s6 hpc sinh gi6i cta.ba 10p 7A,78,7C 16lr lugt ti 19 rI 3:4:2 ni6t reng mn s6 hgc sinh gi6i l6p 7C hon s6 hqc sinh gi6i lop TB ld ern Tinh sO hqc
i ,, srnh glol mctl larp
qau f,O Q,5 ifiAn ) Cho tam gi6cABC, ry le trung <liOrn ctra AC TrCn tia d0i cira tia MB
6y di6m D sao cho MD:MB Tr0n tia tttii cria tia BC 6y di€m E cho BE=BC Gqi I
li giao di6m cria AB vi DE
a) Chring minh ringtAMAD: AMCB ; b) Chrmg minh rlng AD//BC;
c) Ch,mg minh t6*q, I li trung di6m cri,a Ap.
C6u 11 (0,5 itiiim) Tim s0 t.u nhi€n nnhb nh0t d6 c6c ph6n sO sau t6i gi6n:
7_ I 3l_
:,::'::#; ':*':
(Gido viAn coi kiAm tua khang gidi th{ch gi thAm)
Hp vd tLn thi sinh; SBD
ui (2'l' ,r3)' .s+?