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國中數學二下3-2

Authored by 康軒 國中

Education

8th Grade

Used 11+ times

國中數學二下3-2
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

如圖, OA‾⊥OB‾\overline{OA}\perp\overline{OB} , OQ‾\overline{OQ} 平分∠AOC, OP‾\overline{OP} 平分∠BOC,則∠POQ的度數為何?

30°
45°
50°
55°

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

BD‾\overline{BD} 為 ∠ABC\angle ABC 的角平分線,若 ∠ABD=35°\angle ABD=35\degree ,則 ∠ABC=?\angle ABC=?

65°
70°
80°
90°

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

關於「尺規作圖」的敘述,下列何者不正確?_x000B_

已知一直線上一點,並以此點當圓心畫圓,則僅能與直線交於一點
已知圓心和半徑可作一圓
已知一線段,可利用尺規作圖畫出正三角形
給定兩線段,可利用圓規比較兩線段的大小

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

如圖,P為直線L外一點,以P為圓心,適當長為半徑畫弧,交L於A、B兩點,則∆PAB必為下列何種三角形?

正三角形
直角三角形
等腰三角形
等腰直角三角形

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列已知角的角度中,何者無法利用等角作圖繪製出120°?_x000B_

30°
40°
50°
60°

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

已知 AB‾\overline{AB} ,利用中垂線的作圖法將 AB‾\overline{AB} 分成16等分,至少需作圖幾次?

3
4
15
16

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

將一線段分成2:6,需要繪製幾次中垂線?_x000B_

4次
3次
2次
1次

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