角的度量（11岁及以上）
Measuring angles (age 11+)
使用直尺和量角器准确绘制和测量线段与角，并能解读按比例绘制的图纸，获取真实测量值。
Draw and measure line segments and angles accurately using ruler and protractor, and interpret scale drawings to extract real measurements
学习证据 / Evidence
- 已知两边和夹角（SAS），准确画出一个三角形。
- 用量角器测量几何图形中的角，精确到度。
- 阅读按比例绘制的图纸，确定实际长度，并说明所用的比例尺。
- Draw a triangle accurately given two sides and the included angle (SAS)
- Measure angles in a geometric figure to the nearest degree using a protractor
- Read a scale drawing to determine actual lengths, explaining the scale used
评估问题 / Assessment
如果{{name}}拿到一张建筑师的平面图，图中1厘米代表实际2米，{{name}}能否量出图上房间的尺寸并算出实际大小？
If {{name}} is given an architect's floor plan where 1 cm represents 2 m, can they measure a room on the plan and work out its real-world dimensions?