3-1推理證明

3-1推理證明

9th Grade

15 Qs

quiz-placeholder

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3-1推理證明

3-1推理證明

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

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

Media Image

425\frac{42}{5}

585\frac{58}{5}

645\frac{64}{5}

825\frac{82}{5}

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

8

253\frac{25}{3}

809\frac{80}{9}

9

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

150

120

90

60

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

15

16

17

18

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

SSS

SAS

AAS

SSA

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

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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