
4-3特殊四邊形---課本題型
Authored by Wang Ping
Mathematics
8th Grade
Used 6+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
四邊形ABCD為長方形, =8cm, =6cm,求△BOC的周長?
10
16
18
12
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如圖,L1、L2相交於P點,以P為圓心,適當長為半徑畫圓,圓與L1的交點為A、C,與L2的交點為B、D。試說明四邊形ABCD為長方形的理由。
四角90度
兩條對角線等長
兩條對角線等長且互相平分
兩條對角線互相平分
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如圖,菱形ABCD中,∠BAO=30°,
=12,試求菱形ABCD面積?
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如右圖,L1垂直L2於Q點。在L1上取A、C兩點,使
,在L2上取B、D兩點,使 ,試說明四邊形ABCD為菱形的理由。
四邊等長
對角線互相平分
對角線垂直且互相平分
對角線互相垂直
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如圖,四邊形ABCD為一張長方形的色紙,已知
公分, 公分。若取各邊的中點剪去四個角,剩下的圖形恰好為菱形EFGH,則菱形的周長為多少公分?
34
40
52
72
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
小毅製作了一只風箏(如圖),首先他在紙上剪出一個箏形ABCD,其中 、 ,∠BAD=90°,接著再準備兩根竹棍固定在對角線上,若不計竹棍的寬度,則兩根竹棍的長度分別為多少?
12 ,
12 ,
12 ,
12 ,
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小毅製作了一只風箏(如圖),首先他在紙上剪出一個箏形ABCD,已知其中 , ,∠BAD=90°,試問∠ABC度數為多少?
45
60
105
30
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