Then b (0 0,0,0), a1(0 (0,2,6), a (0 0,2,0), m (32,12,62),
∴A 1B=(0？ 2,? 6)，AM=(32，？ 32. I have praised it and stepped on it. What is your evaluation of this answer? Put away comments//high quality or satisfaction or special types or recommended answers dottimewindow.iperformance & window.iperformance.mark ('c _ best',+newdate); Lawyer recommendation service: If your problem has not been solved, please describe your problem in detail and provide free professional consultation through Baidu Law Professional Edition. Other similar questions 2017-09-21(2014? As shown in the figure, in the regular triangular prism ABC-a1b1c1,e and f are the midpoint of BB 1 and AC respectively. (1) verification: BF∑ plane a1EC; ; 2320 18-03-28(20 1 1? As shown in the figure, in triangular prism ABC-a1b1c1,AB=AC=AA 1=3a, BC=2a, D is the midpoint of BC, E is the midpoint of AB, and F is C22017-00. As shown in the figure, in the prism ABC-a 1 B 1C, AB=AC=5, BB 1=BC=6, and D and E are the midpoint of AA 1 and B1c respectively. In the prism ABC-a1b1c1,a 654438 Liaoning) as shown in the figure, the prism ABC-A'B'C', ∠ BAC = 90, AB = AC = 2°, AA' =/. It is proved that the edges of the triangular prism ABC-a1162019-12-27 on the ∠ surface of BC are all equal, and ∠ Baa 1. 220 16- 12-0 1(20 12? Taizhou second model) As shown in the figure, in the straight triangular prism ABC-A1B1C1,D and E are the midpoint of the sides BC and AB respectively, and the point F is on the side CC 1. It is known that AB=AC, AA 1 1 is recommended to you: F is especially recommended. [{ ' URL ':'/d 0 1373 f 082025 AAF 5 1 1aa 256 e 9 edab 64034 f 1a 07？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto '， ' contractId':'A24KA00562 '，}，{ ' URL ':/builder/bjh-activity/articlesTask？ taskId = 1598082 & aside = 0 & footer = true & from = 0 '，' src ':'/203 FB 80 e 7 bec 54 e 773 ea 0680 ab 389 b 504 fc 26 a2d？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto '，' contractId ':' '，}])； Is Huaqiang North's second-hand mobile phone reliable? Why is the cost of cancer treatment getting higher and higher? What impact will the "network toilet" have? The price of electric cars has dropped many times. Is the quality guaranteed? I recommend f.context ('recbrand', [{"img": "\/86D6277F9E2F07083523F69DFB 24B 899A901F20d? x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto "，" url":"/hm.js？ 6859 ce 5a af 00 FB 00387 e 6434 E4 FCC 925 "； var s = document . getelementsbytagname(" script ")[0]； s.parentNode.insertBefore(hm，s)； })(); window . TT = 172 1285075；