Mathematics
Junior High
為什麼GH,HI不能算 只能算GI
(C) 15
(D) 20
3 如右圖,長方形ABCD中,E、F兩點在AD上,G、H、I三點在
BC 上。若通過相異兩點恰可畫出一條直線,則通過E、F、G、
H、I這五點中的任意兩點,共可畫出多少條相異的直線?
(A) 6
(C) 8
(B) 7
(D) 9
E F
A
D
B
OGHI
C
2
3. 可畫出金、金、、金、金、宜、節、宜,共8條
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