坐标变换
Coordinate Transformations
识别平移、旋转和反射的性质；描述并在给定图形上进行这些变换，理解变换后的图形与原图形全等。
Identify properties of translations, rotations, and reflections; describe and perform these transformations on given figures, and understand that the image is congruent to the original
学习证据 / Evidence
- 在给定的镜像线（包括斜线）上作一个图形的反射，并写出像的坐标。
- 绕给定中心将图形旋转90°或180°，并描述结果。
- 按给定向量平移一个图形，并验证长度和角度保持不变。
- Reflect a shape in a given mirror line (including diagonal lines) and state the coordinates of the image
- Rotate a shape about a given centre by 90° or 180° and describe the result
- Translate a shape by a given vector and verify that lengths and angles are preserved
评估问题 / Assessment
如果要求{{name}}将三角形绕一个固定点顺时针旋转90°，他们能否算出每个顶点最终的位置，并确认三角形的大小和形状保持不变？
If {{name}} is asked to rotate a triangle 90° clockwise around a fixed point, can they work out where each corner ends up — and confirm the triangle is still the same size and shape?