已知平面四边形ABCD的CD边为水平线，完成四边形ABCD的正面投影，试判断下面哪种作图方法及结果是正确的？[img=1423x921]1803d0d062ca1e2.jpg[/img]
A: [img=1423x921]1803d0d06fc57d9.jpg[/img]
B: [img=1423x921]1803d0d07c9de2e.jpg[/img]
C: [img=1423x921]1803d0d08ab5486.jpg[/img]
D: [img=1423x921]1803d0d098fc523.jpg[/img]
A: [img=1423x921]1803d0d06fc57d9.jpg[/img]
B: [img=1423x921]1803d0d07c9de2e.jpg[/img]
C: [img=1423x921]1803d0d08ab5486.jpg[/img]
D: [img=1423x921]1803d0d098fc523.jpg[/img]
举一反三
- 已知平面四边形ABCD的CD边为水平线，完成四边形ABCD的正面投影，试判断下面哪种作图方法及结果是正确的？[img=1423x921]18033578b1b760e.jpg[/img] A: [img=1423x921]18033578bfb1da5.jpg[/img] B: [img=1423x921]18033578ccef1a4.jpg[/img] C: [img=1423x921]18033578dc77fa0.jpg[/img] D: [img=1423x921]18033578eb70eef.jpg[/img]
- 已知平面四边形ABCD的CD边为水平线，完成四边形ABCD的正面投影，试判断下面哪种作图方法及结果是正确的？[img=1423x921]18037af9092ced4.jpg[/img] A: [img=1423x921]18037af9168a1bd.jpg[/img] B: [img=1423x921]18037af9244ca27.jpg[/img] C: [img=1423x921]18037af9326ebf2.jpg[/img] D: [img=1423x921]18037af94031860.jpg[/img]
- 已知平面四边形ABCD的CD边为水平线，完成四边形ABCD的正面投影，试判断下面哪种作图方法及结果是正确的？[img=1423x921]18037e38db7bdbb.jpg[/img] A: [img=1423x921]18037e38ea92112.jpg[/img] B: [img=1423x921]18037e38f9fc76e.jpg[/img] C: [img=1423x921]18037e39075d5c0.jpg[/img] D: [img=1423x921]18037e3915922ad.jpg[/img]
- 已知平面四边形ABCD的CD边为水平线，完成四边形ABCD的正面投影，试判断下面哪种作图方法及结果是正确的？[img=1423x921]180356af98207d7.jpg[/img] A: [img=1423x921]180356afa4adc67.jpg[/img] B: [img=1423x921]180356afb20e904.jpg[/img] C: [img=1423x921]180356afbf48244.jpg[/img] D: [img=1423x921]180356afcc2f2f4.jpg[/img]
- 已知平面四边形ABCD的CD边为水平线，完成四边形ABCD的正面投影，试判下面哪种作图方法及结果是正确的？[img=1423x921]1803d7552dbc3c6.jpg[/img] A: [img=1423x921]1803d7553ad847e.jpg[/img] B: [img=1423x921]1803d75548e07ba.jpg[/img] C: [img=1423x921]1803d75556dd31a.jpg[/img] D: [img=1423x921]1803d755638bb6f.jpg[/img]