论文部分内容阅读
人教版数学九年级下册第27.2.2《相似三角形应用举例》中的例3是一个运用数学知识测金字塔高度的问题,书上给我们提供了一种运用相似三角形的知识解决问题的方法.但是,在解法的左边“飘”着一朵云:怎样测出OA的长呢?这可给学生制造了不小的
Example 3 of “Example of Similar Triangle Application” is a question of using mathematical knowledge to measure the height of a pyramid. The book provides us with a method to solve problems using the knowledge of similar triangles However, on the left side of the solution “floating ” with a cloud: how to measure the length of OA? This can give students a not-so-small