用一条长为24cm细绳围成一个等腰三角形.
(1)如果腰长是底边的2倍,那么各边的长是多少?
(2)能围成有一边的长为6cm的等腰三角形吗?为什么?
(3)若等腰三角形的腰长为acm,求a的取值范围?
(1)如果腰长是底边的2倍,那么各边的长是多少?
(2)能围成有一边的长为6cm的等腰三角形吗?为什么?
(3)若等腰三角形的腰长为acm,求a的取值范围?
22-23八年级上·江西南昌·期中 查看更多[2]
江西省南昌三中教育集团2022-2023学年八年级上学期期中考试数学试卷(已下线)第一次月考模拟卷(范围:三角形的证明、一元一次不等式与一元一次不等式组)-【单元测试】2022-2023学年八年级数学下册分层训练AB卷(北师大版)
更新时间:2022-12-08 17:27:28
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解答题-问答题
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适中
(0.65)
【推荐1】我们知道,若有理数
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,且
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与点
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(2)若
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(3)若点
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(1)若点
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【推荐2】如图,平行四边形
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(1)求证:当
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【推荐1】在等腰
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【推荐1】一个不等边三角形的边长都是整数,且周长是12,这样的三角形共有多少个?
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【推荐2】已知关于x的一元二次方程
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解答题-证明题
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【推荐1】如图,在
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【推荐2】如图,四边形ACFD是一个边长为b的正方形,延长FC到B,使BC=a,连接AB,使AB=C;E是边DF上的点且DE=a.
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(2)用含b的式子表示四边形ABFE的面积;
(3)求证:a2+b2=c2.
(1)判断△ABE的形状,并证明你的结论;
(2)用含b的式子表示四边形ABFE的面积;
(3)求证:a2+b2=c2.
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