比例尺与相似图形
Scale and similar shapes
解决涉及相似图形的问题，其中比例尺已知或可以求出
Solve problems involving similar shapes where the scale factor is known or can be found
学习证据 / Evidence
- 已知比例因子为3，求相似矩形中未知的边长
- 根据给定的边长，确定两个相似三角形之间的比例因子
- 使用比例因子放大或缩小图形，并验证所有边是否成相同比例
- Find the missing side of a similar rectangle given a scale factor of 3
- Determine the scale factor between two similar triangles from given side lengths
- Use a scale factor to enlarge or reduce a shape and verify that all sides are in the same ratio
评估问题 / Assessment
如果{{name}}有一幅比例尺为1厘米代表5米的图纸，平面图上房间长度为3.5厘米，{{name}}能算出房间的实际长度吗？
If {{name}} has a scale drawing where 1 cm represents 5 m, and a room measures 3.5 cm on the plan, can they work out the real length of the room?