題號12345678910
答案CBBCCCCBDC
11.2013,2
12.30
∥BC(答案不唯一)
14.(0,-3)
15.8
16.(63,32)
17.(1)原式=7+2(2)原式=-6
18.證明:易證△ADE≌DCF
∴∠1=∠2
又∵∠2+∠3=∠1+∠4=45°
∴∠4=∠3
∵∠AEO=∠DEM
∴∠AOD=∠EMD=90°
∴AM⊥DF
19.圖略,
20.(1)7(2)(3)
21.∠B=∠AEB=45°略
22.C(2,2)或C(-2,-6)
=5
24.(1)(2)即A.34臺,B.66臺
(3)①當0