论文部分内容阅读
例1已知线段AB=8cm,在直线AB上画线段BC,使它等于3cm,求线段AC的长.分析有些同学将线段与直线混为一谈,认为点C在直线AB上,就是点C在线段AB
Example 1 Known line segment AB = 8cm. Draw line segment BC on line AB to make it equal to 3cm. Find the length of line segment AC. Analyze some students to confuse line segments with lines. Think of point C on line AB as point C. AB