复合图形周长
Perimeter of Compound Shapes
测量并计算由直线边组合而成的图形的周长，单位用厘米和米。
Measure and calculate the perimeter of composite rectilinear shapes in centimetres and metres
学习证据 / Evidence
- 通过找出L形图形的所有边长来求它的周长
- 计算需要先推算出某些边长的复合图形的周长
- 画出一个周长为40厘米的直线边复合图形
- Find the perimeter of an L-shaped figure by identifying all side lengths
- Calculate the perimeter of a composite shape where some sides must be deduced
- Draw a composite rectilinear shape with a perimeter of 40 cm
评估问题 / Assessment
如果{{name}}拿到一张L形花园平面图，上面标有所有边的长度，他们能把所有边加起来求出总周长吗？
If {{name}} is given an L-shaped garden plan with all the side measurements labelled, can they add all the sides together to find the total perimeter?