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3-1推理證明

Authored by 文瑋 劉

Mathematics

9th Grade

Used 6+ times

3-1推理證明
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15 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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ABAD∵\overline{AB}=\overline{AD}

CAEBAD∠CAE=∠BAD

AE=AC\overline{AE}=\overline{AC}

利用SAS全等性質證明全等

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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425\frac{42}{5}

585\frac{58}{5}

645\frac{64}{5}

825\frac{82}{5}

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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8

253\frac{25}{3}

809\frac{80}{9}

9

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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150

120

90

60

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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15

16

17

18

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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SSS

SAS

AAS

SSA

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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DELBFL7=90°DE=BF\because\overline{DE}\perp L,\overline{BF}\perp L,\angle7=90\degree,\therefore\overline{DE}=\overline{BF}

DELBFL7=90°1=4\because\overline{DE}\perp L,\overline{BF}\perp L,\angle7=90\degree,\therefore\angle1=\angle4

7=90°5=6=90°2=3\because\angle7=90\degree,\angle5=\angle6=90\degree,\therefore\angle2=\angle3

7=590°122313∵∠7=∠5=90°,∴∠1+∠2=∠2+∠3\Longrightarrow∠1=∠3

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