[有理数] 2022年初中数学：有理数的混合运算 2022-09-05
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[有理数] 2022年初中数学知识点：有理数概念和数轴 2022-09-05
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[有理数] 2022年初中数学：科学计数法 2022-09-05
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[有理数] 2022年初中数学知识点：相反数 2022-09-05
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[有理数] 2022年初中数学知识点：正数和负数 2022-09-05
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 2022年初中数学知识点：正数和负数...
[三角形] 2022年初中数学相似三角形定义 2022-09-05
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 1.相似三角形定义： 对应角相等，对应边成比例的三角形，叫作相似三角形。 2.相似三...
[三角形] 2022年初中数学三角形常见考法 2022-09-05
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 常见考法 1利用全等三角形的性质:①证明线段( 或角)相等;②证明两条线段的和差等于另...
[三角形] 2022年初中数学各锐角三角函数的关系 2022-09-05
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[三角形] 2022年初中数学如何证明三角形全等步骤 2022-09-05
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 证明两三角形全等或利用它证明线段或角的相等的基本方法步骤: 1确定已知条件(包括隐...
[三角形] 2022年初中数学勾股定理 2022-09-05
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