
三心重點整理
Interactive Video
•
Mathematics
•
9th Grade
•
Hard
HanChuan Zhang
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
三角形的外心是哪三條線的交點?
三邊中線
三邊中垂線
三內角角平分線
三高
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
直角三角形的外心位於何處?
三角形內部
三角形外部
斜邊中點
其中一個頂點上
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於三角形的內心,下列敘述何者正確?
內心到三頂點等距離。
內心是三邊中垂線的交點。
內心到三邊等距離。
內心是三中線的交點。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
直角三角形的內切圓半徑r,可透過哪種方式計算?
(兩股和 + 斜邊) / 2
(兩股和 - 斜邊) / 2
(斜邊 - 兩股和) / 2
兩股和 / 2
5.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
您喜歡視訊課程嗎?
是
否
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
三角形重心到頂點的距離與重心到對邊中點的距離比為何?
1:1
1:2
2:1
3:1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將三角形的三條中線完全連接起來,會將三角形分成幾塊面積相等的小三角形?
3
4
5
6
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
對於正三角形,下列哪項敘述是正確的?
外心、內心、重心、垂心不共點。
外接圓半徑與內切圓半徑的比為 1:2。
外心、內心、重心、垂心共點。
外接圓半徑與內切圓半徑的比為 3:1。
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
直角三角形的外心位於何處?
斜邊的中點。
直角頂點。
兩股的中點。
三角形的內部。
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