cho ba diem a,b,c sao cho b nam giua a,c lam the nao chi do hai lan ma biet duoc do dai cua ca ba doan thang ab,bc,ac, h...

CV

Cửu vĩ linh hồ Kurama

9 tháng 11 2016

Cho 3 diem thang hang A,B,C sao cho B nam giua A va C.Lam the nao de chi do 2 lan,ma biet duoc do dai cua 3 doan thang AB,BC,AC?hay neu cac cach lam khac nhau.

Giúp mk nha mk cần gấp!!!!!

#Toán lớp 6

1

TH

Thu Hoài

9 tháng 11 2016

chỉ cần đo 1 lần thôi, đó là đo đoạn AC, sau đó chia cho 2 sẽ ra đoạn AB và = BC

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TT

tran thi nhung

4 tháng 11 2016

biet ba diem a,b,c thang hang diem c nam giua hai diem con lai co the chi do do dai cua hai doan thang ma biet dc ba do dai ab,ac,bc ko giai thich cach lam cua ban

#Toán lớp 6

0

ND

ngan dai

1 tháng 11 2015

ve tuy y 3 diem A , B , C thang hang . Lam the nao de chi do 2 lan ma biet duoc do dai cua cac doan thang AB , BC , CA

#Toán lớp 6

0

K

KareNotto

9 tháng 8 2017

Cho diem C nam giua hai diem A va B, biet AB = 6cm. Goi M va N lan luot la trung diem cua cac doan thang AC va BC.

a) Tinh do dai doan thang MN.

b) Hay neu cach chon diem C de cho do dai doan thang MN gap 3 lan do dai doan MC.

#Toán lớp 6

0

HD

Hoàng Diệu Anh

27 tháng 11 2016

Cau 5: Trong cac khang dinh sau, khang dinh nao dung, khang dinh nao sai?1.Ba diem phan biet la ba diem thang hang.2.Voi ba diem phan biet luon co hai diem nam ve cung phia doi voi diem con lai.3.Voi ba diem thang hang phan biet luon co hai diem nam khac phia voi diem con lai.4.Voi ba diem A,B,C thang hang thi diem B luon nam giua hai diem A,C.5.Co mot va chi mot duong thang di qua hai diem (phan biet) cho truoc.6.Hai duong thang phan biet thi song song voi nhau.7.Hai tia chung goc thi cung nam...

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#Toán lớp 6

1

TM

Trần Minh Châu

19 tháng 11 2017

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I

i9oiopjiuphyui

21 tháng 4 2016

ve goc xOy. ve tia Oz man giua hai tia Ox,Oy. lam the nao chi de do hai lan ma biet duoc so do cua ca ba goc xOy, yOz,xOz. co may cach

#Toán lớp 6

0

DT

dao thuy trang

13 tháng 11 2017

cho tia ox goi a la mot diem tren tia ox sao cho oa = 3cm tren tia ax lay diem b sao cho ab=5cm tren tia doi cua tia bx lay diem c sao cho bc= 4cm

a.trong ba diem a ,b,c diem nao nam giua hai diem con lai? vi sao?

b. tinh do dai doan thang AC

c. diemC co phai la trung diem cua doan thang OB hay khong? VI SAO?

#Toán lớp 6

0

HA

Haibara Ai

6 tháng 12 2016

Cho doan thang AC = 7cm. Diem B nam giua A va C sao cho BC = 4cm. a) Tinh do dai doan thang AB. b) Tren tia doi cua BA lay diem D sao cho BD = 6 cm. So sanh BC va CD. c) Diem C co la trung diem cua BD khong?

#Toán lớp 6

0

Q

qưerui

15 tháng 3 2016

Tren tia Ox cho 4 diem A,B,C,D.Biet rang A nam giua B va C;B nam giua C va D; OA=7cm; OD=3cm; BC=8cm; va AC=3BD

a,Tinh do dai AC.

b,Chung to rang diem B la trung diem cua doan thang AD

CACH LAM NHA

#Toán lớp 6

0

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