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GOODA.VN - THU VIỆN SÁCH QUÝ

., 1 7+ & 75 1* 7o0

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SẮP XẾP

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GOODA.VN - THU VIỆN SÁCH QUÝ

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x x x x x x x

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GOODA.VN - THU VIỆN SÁCH QUÝ

'°QJ ;F õÌQK E¶F KÇ VÔ FÚD õD WKßF 3+ ¡1* 3+k3 *,l, %ұF FӫD ÿD WKӭF PӝW ELӃQ NKiF ÿD WKӭF NK{QJ ÿm WKX JӑQ Oj Vӕ PǊ OӟQ QKҩW FӫD ELӃQ WURQJ ÿD WKӭF ÿy +Ӌ Vӕ FӫD OǊ\ WKӯD EұF FӫD ELӃQ JӑL Oj KӋ Vӕ Wӵ GR KӋ Vӕ FӫD OǊ\ WKӯD EұF FDR QKҩW FӫD ELӃQ JӑL Oj KӋ Vӕ FDR QKҩW

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E B y

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GOODA.VN - THU VIỆN SÁCH QUÝ

'°QJ 7ÉQK JL WUÌ FÚD õD WKßF 3+ ¡1* 3+k3 *,l, 9t Gө 7tQK JLi WUӏ FӫD ÿD WKӭF

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GOODA.VN - THU VIỆN SÁCH QUÝ

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x x x

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GOODA.VN - THU VIỆN SÁCH QUÝ

., 0 75$ 6 7, 1 % 3+p1 75w& 1*+, 0 ô, 0

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GOODA.VN - THU VIỆN SÁCH QUÝ

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n EAC n % EAB

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CH ! BH n MAC n &KӭQJ PLQK UҵQJ AB ! AC &kX ÿLӇP &KR 'ABC M Oj WUXQJ ÿLӇP FӫD BC Yj BAM

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GOODA.VN - THU VIỆN SÁCH QUÝ

., 1 7+ & 75 1* 7o0

QUAN HỆ GIỮA GÓC VÀ CẠNH ĐỐI DIỆN TRONG TAM GIÁC. BẤT ĐẲNG THỨC TAM GIÁC A 7URQJ PӝW WDP JLiF JyF ÿӕL GLӋQ YӟL FҥQK OӟQ KѫQ Oj JyF OӟQ KѫQ

l !C l AC ! AB B

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C ĈL WKHR ÿѭӡQJ WKҷQJ VӁ QJҳQ KѫQ ÿL WKHR ÿѭӡQJ JҩS NK~F

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GOODA.VN - THU VIỆN SÁCH QUÝ

ABC có AB

ACB .

ABC

•

ABC có

AB AC

A AB

ABC

AC AB

•

ABC BC AB 2 AC 2 B C. 2

A AC 2

ABC

BC 2

AB 2

AC 2

AH,

•

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GOODA.VN - THU VIỆN SÁCH QUÝ • HAB AB 2

BH 2

AH 2

HAC

ABC có AC

AH 2

H AC 2

AB 2

ABC

2DC.

•

AB; DF

AC (E

AB, F

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(2)

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GOODA.VN - THU VIỆN SÁCH QUÝ

ABC có A 2B , B C ABC.

•

ABC B C A

A A

Cho

ABC,

A C A C ABC. BC A D.

A B C 80

B C

2B B

A 2

B C

AB.

40 .

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CD.

ng BD

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GOODA.VN - THU VIỆN SÁCH QUÝ

/ӡL JLҧL

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l !B l !C l q A

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3KkQ WtFK Wѭ GX\

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GOODA.VN - THU VIแป N Sร CH QUร ย /ำกL JLางL 7KHR JLาง WKLำ W WD Fy l B l C l A

ย

l A

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ย MDC

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n ย ABC n MBD n ! MDC n MDB n MDB

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GOODA.VN - THU VIỆN SÁCH QUÝ

%j, 7t3 7 /8< 1 %j, 7t3 &¡ %l1 &kX &KR WDP JLiF ABC Fy $%

FP $&

FP Yj %&

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FP BC

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GOODA.VN - THU VIỆN SÁCH QUÝ

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GOODA.VN - THU VIỆN SÁCH QUÝ

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B. HB ! HC .

3 cm, AC

4 cm , ÿѭӡQJ cao AH . .KҷQJ ÿӏQK nào VDX ÿk\

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GOODA.VN - THU VIỆN SÁCH QUÝ

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GOODA.VN - THU VIỆN SÁCH QUÝ

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GOODA.VN - THU VIỆN SÁCH QUÝ

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GOODA.VN - THU VIỆN SÁCH QUÝ

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GOODA.VN - THU VIỆN SÁCH QUÝ

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GOODA.VN - THU VIỆN SÁCH QUÝ

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