已知菱形的边长为2，将沿折起，使得点至点的位置，得到四面体当二面角的大小为120°时，四面体的体积为；当四面体的体积为1时，以为球心，的长 Sketch Coloring Page

已知菱形的边长为2，将沿折起，使得点至点的位置，得到四面体当二面角的大小为120°时，四面体的体积为；当四面体的体积为1时，以为球心，的长 Template

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tomski已知菱形的边长为2，将沿折起，使得点至点的位置，得到四面体当二面角的大小为120°时，四面体的体积为；当四面体的体积为1时，以为球心，的长 coloring

已知菱形的边长为2，将沿折起，使得点至点的位置，得到四面体当二面角的大小为120°时，四面体的体积为；当四面体的体积为1时，以为球心，的长 sketch template

已知菱形的一个内角为60度，一条对角线的长为2倍根号3，则另一条对角线的长为？百度知道 sketch template

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已知菱形ABCD的边长为2∠BAD=60°．将三角形ABD沿对角线BD折到ABD使得二面角A BD C的大小为60°则AD与平面 sketch template

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菱形对折对折折页第5页大山谷图库 sketch template

如图，菱形的边长为，，为的中点．将沿折起，使到达，高途 sketch template

如图在菱形ABCD中AB=2∠A=120°过菱形ABCD的对称中心O分别作边ABBC的垂线交各边于点EFGH则四边形 sketch template

十四平面几何之四边形知乎 sketch template

题目如图1在平面直角坐标系中点O是坐标原点四边形ABCO是菱形点A的坐标为点C在x轴的正半轴上直线AC交y轴于点MAB边交y sketch template

2．如图所示已知菱形ABCD的边长为2cm∠BAD＝120°求这个菱形的两条对角线的长．——青夏教育精英家教�—— sketch template

已知菱形ABCD中∠BAD=600把它放在平面直角坐标系中使AD在x轴上点C的坐标为82 1在右图中画出符合条件的菱形和直角 sketch template

如图�已知点O为菱形ABCD的对称中心∠A=60°将等边 OEF的顶点放在点O处OEOF分别交ABBC于点MN．1求证OM sketch template

如图已知菱形ABCD的边长为2∠BAD=60°若DE⊥AB垂足为点E则DE的长为33．题目和参考答案——青夏教育精英家教�—— sketch template

已知如图在菱形ABCD中∠B=60°点EF分别是ABAD上的两个动点且始终保持∠ECF=60°1试判断 ECF的形状并说明 sketch template

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【题目� 如图，在菱形纸片 ABCD 中， AB＝2， ∠ A＝60° ，将菱形纸片翻折，使点 A 落在 CD 的中点 E 百度教育 sketch template

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已知菱形ABCD的边长为2∠BAD=120°则菱形的对角线长是．题目和参考答案——青夏教育精英家教�—— sketch template

如图已知菱形ABCD中∠ABC=60°AB=6点E是AB的中点F是边BC上的任意一点将 BEF沿EF折叠B点的对应点为B′连接 sketch template

正四面体ABCD棱长为2，E、F分别为BC、AD中点，则EF的长为 百度教育 sketch template

菱形ABCD的边长为2∠A=60°则它的面积为 ．题目和参考答案——青夏教育精英家教�—— sketch template

已知菱形，，将沿对角线折起，使以，，，四点为顶点的 高途 sketch template

已知正三棱柱ABC A1B1C1的底面边长为2高为4过BC作一截面截面与底面ABC成600角则截面面积是 A．4 B． C． D sketch template

如图1已知菱形ABCD的边长为23点A在x轴负半轴上点B在坐标原点．点D的坐标为 33抛物线y=ax2 B经过ABCD两边的 sketch template

已知菱形ABCD中∠A=72°如图�可以用3条直线将菱形ABCD分割成4个等腰三角形．你能在图��中再作出符合条件的两种分割方法吗 sketch template

如图已知菱形ABCD的边长为4对角线BD=4点EF分别在菱形的边ADCD上�动点EF均不与点ACD重合且满足AE CF sketch template

已知如图10菱形ABCD的�长为16 Cm ∠ABC＝60°对角线AC和BD相交于点O 求AC和BD的长——青夏教育精英家教�—— sketch template

如图已知正方形ABCD的边长为2沿对角线AC将三角形ADC折起使平面ADC与平面ABC垂直折叠后BD两点的距离是 B sketch template

$已知菱形ABCD边长为2．∠BAD=$frac{π}{3}$．将 ABD沿BD折起．折成二面角A1 BD C．则下列说法正确的是 A．当 sketch template$

已知如图等边 ABC和正方形ACPQ的边长都是1在图形所在的平面内以点A为旋转中心将正方形ACPQ沿逆时针方�旋转α使AQ与AB重合 sketch template

如图在斜棱柱ABC A1B1C1中底面为正三角形侧棱长等于底面边长且侧棱与底面所成的角为60°顶点B1在底面ABC上的射影O恰好是 sketch template

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