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111_南一_九年級數學(五)1-2

Authored by 一支 一支

Mathematics

9th Grade

111_南一_九年級數學(五)1-2
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8 questions

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1.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Media Image

如圖,在△ABC 中,若D 點在AB 上,E 點在AC 上,則在下列哪一個條件下,不一定使得DE // BC ?

AD : AB = AE : AC

AD : BD = AE : EC

AD : AB = DE : BC

BD : AB = EC : AC

2.

MULTIPLE SELECT QUESTION

10 mins • 1 pt

如圖,直線M1 // 直線M2 // 直線M3,已知直線L1 與直線M1、M2、M3 分別交於A、B、C 三點,直線L2 與直線M1、M2、M3 分別交於D、E、F 三點。若DE =8、EF =12、GF =18,則下列(甲)~(丙)的敘述,哪些是正確的?

DE : EF = AG : GF

AF =30

3 AB =2 BC

3.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

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如圖,在△ABC 中,D 點在AC 上,且AD =4, CD =2,則△ABD 面積:△ABC 面積=?

1:2

1:3

2:3

4:5

4.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

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如圖,已知AB =8 公分,維元依下列步驟作圖:過A 點作一直線AX,在直線AX 上依次取AC = CD = DE = EF = FG = GH = HI 。連接BI ,過E 點作BI 的平行線交AB 於P 點。若AP =a 公分,則下列何者正確?

3.2<a<3.3

3.3<a<3.4

3.4<a<3.5

3.5<a<3.6

5.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Media Image

圖△ABC 中, DE // BC , EF // AB 。若AD =4, BD =6,DE =4.5,則CF =?

6.75

7

7.25

8

6.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Media Image

如右圖,已知AD // BE // CF ,且BE 交CD 於G 點。若AB=8, AC =20, EF =9, CD =25,則DE + CG =?

12

15

16

21

7.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Media Image

如圖,△ABC 中, AB = AC ,D 是BC 的中點,且AE : DE =2:3,則△ABE 面積:△ABC 面積=?

1:4

1:5

1:6

1:10

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