九上3-2重心
Authored by 黃俊賓 關山國中
Mathematics
9th Grade
Used 2+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6
9
12
18
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
28
24
16
12
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
甲、乙
乙、丙
丙、乙
丙、甲
Answer explanation
外心在鈍角△的外面，丙為外心
重心在中線距頂端的2/3處，乙為重心
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
△ABF 的面積為 16
四邊形 ABCD 面積為 108
Answer explanation
平行四邊形面積=8×12=96
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
憑儀打算將一塊三角形的土地平分給三個小孩，則她必須先找出該土地的哪個交點？
三角形三邊中垂線的交點
三角形三條中線的交點
三角形三內角平分線的交點
三角形三邊上的高之交點
6.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如圖，G為△ABC的重心，若△ABC的面積為36平方公分，則斜線部分的面積為多少平方公分？
12
15
18
21
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