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九上數3-2外心Q2

Authored by Enina Wang

Mathematics

6th - 8th Grade

Used 1+ times

九上數3-2外心Q2
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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

如圖,o為外心,請問這是何種∆?

銳角∆

鈍角∆

直角∆

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

如圖,o為外心,請問這是何種∆??

鈍角∆

銳角∆

直角∆

任何∆都可以

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

如圖,o為∆的外心,請問此外接圓r=??

2股和

斜邊長

斜邊/2

周長/3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

如圖,O為外心,請問∠BOC和∠A的關係??

∠BOC=∠A

∠BOC=2∠A

∠BOC=∠A/2

∠BOC=360°-∠A

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

如圖,o為外心,請問∠BOC和∠A的關係式會是何者??

∠BOC=∠A

∠BOC=360°-2∠A

∠BOC=360°-∠A

∠BOC=2∠A

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

如圖,在銳角△ABC中,O點為外心,若∠BAC=66°,則∠BOC的度數為何?

66°

114°

132°

48°

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

如圖,在鈍角△ABC中,O點為外心,若∠BAC=115°,則∠BOC的度數為何?

115°

230°

65°

130°

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