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题型:解答题 难度系数:0.65 引用次数:123 更新时间:2018/12/05 04:28:11 题号:7263438
类题推荐
【推荐1】如图,在以eqId4602d1c8f9d24d7baf8fe5da1d7dfaa2为顶点的多面体中,eqId49b07c005155438286e7ee699acdca49eqId5ce7a06ae7a34393b92b5277978ac014eqId03833d4ff3714d3696d5e7201c86ea47eqIdeec1827a5d2841888521a9471977822deqIdf0c127bd8235465ebcea742fa9a3a0caeqIdfa6774f67ba744609bf953cef42dd829eqId80e1e9aa015140f0a20eccab0750bd8a
figure
(Ⅰ)请在图中作出平面eqIdfeb6b907b26b41e08eefcf20cf0e65d1,使得eqIda06a273bf28d41448911a88e60688bb8平面eqIdfeb6b907b26b41e08eefcf20cf0e65d1,并说明理由;
(Ⅱ)证明:eqIde2a08563fb0140d3b16360de6f7d6c7a平面eqIdedf40810b0c249f7a28084bb4ec2edc4.
难度系数:0.65使用:97次题型:解答题更新:2019/8/13
【推荐2】如图,在四棱锥eqIdac097205e9cb41279269aadcac3fb6f1中,底面eqId5ce7a06ae7a34393b92b5277978ac014是直角梯形,且eqIdeec1827a5d2841888521a9471977822deqIdeecb96c84ba340069d573f6c1caefbbbeqId4f1b3aedcfa44aa7a011454397e994b8eqIddb074474bc334e099d5c47fb2d65d4e2eqIdbd7cedfb6bbe492c8e080c0c81ad5874eqIdfa5894e87dff486492b42c3d091121aeeqId89103af01bd04d5b8b5e3db76481adc9.
figure
(1)证明:eqIde78cce043a6c43329b55788351ff3484平面eqId5ce7a06ae7a34393b92b5277978ac014
(2)求四棱锥eqIdac097205e9cb41279269aadcac3fb6f1的体积.
难度系数:0.65使用:62次题型:解答题更新:2019/8/22
【推荐3】如图,在四棱锥eqIdac097205e9cb41279269aadcac3fb6f1中,eqIdb19272aa0ea2498fa33f4886bbe9e3cfeqId1659ffd0bab644598f55d71ea8cdaf75eqIdac0fe6c68d294937a87cf84fee203b0ceqId0875f2270c994431a2d030c81bbc0d9feqId0cdbc9426fb64ae38a61244114ff37e1eqId93cbffaa5ae045d6ac45d1e979991c3aeqIdd5b10b2a13f148b78e0d5a1b820538fd分别为棱eqId99a3187c2b8f4bcc9703c74c3b72f1f3eqIde9b50933e347462ea824ccc9bf51fc93的中点.
figure
(1)证明:eqId43fe05c727b14343a0211870697669c9平面eqId5ce7a06ae7a34393b92b5277978ac014.
(2)证明:平面eqIde0bc54a37e2640bca9414bca2bdb27cf平面eqId6f7cf0443ba440fdb0595be4bda232b9.
难度系数:0.85使用:183次题型:解答题更新:2019/8/15
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