
相似三角形的應用測驗三
Quiz
•
Mathematics
•
8th Grade
•
Medium
許逸菁 許逸菁
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13 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如右圖,已知小妍的身高為 160 公分,在太陽
下,當他的影子長為 100 公分時,量出旗杆的
影子長為 250 公分,求旗杆長為多少公分?
300
400
500
600
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
有一棵樹,不知它有多高,但知道它影子的長度為24公尺,當地上立一根 2 公尺的竹竿時,竹竿的影長是3 公尺,則樹的高度是多少公尺?
12
16
20
24
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
小靖設計兩個直角三角形來測量河寬 AB ,如右圖。 DE 、 AB 皆同時與河岸 AD 垂直,且C在 BE 上。已知 DE =8公尺、 CD =6公尺、 AC =12公尺,求河寬 AB 的長度為多少?
16
8
20
24
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
如圖,人站在A處,將鏡子平放在地面上B處,恰可看到C處的樹頂,若AB=3公尺,BC=9公尺,人的眼睛離地面1.5公尺,則樹高為多少公
4
5
3.5
4.5
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
已知小翊的眼睛離地面高度為 140 公分,爸爸的眼睛離地面高度為 175 公分,兩人相距 360 公分站立著。若要在兩人之間的地面上平放一面鏡子,使小翊和爸爸可以透過鏡子相視,則鏡子應放在距離爸爸多少公分處?( 不計鏡子寬度 )
200
250
300
350
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如右圖,△ABC 中,DE // BC,AD:DB=4:3,則: AE:EC=?
4:3
3:4
4:7
16:9
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如右圖,△ABC 中,DE // BC,AD:DB=4:3,則:若△ABC 面積為 49/2 平方公分,則△ADE 面積=?
12
16
8
27
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