平行线所成的角
Angles with parallel lines
理解并运用两条平行线被一条截线所截形成的角之间的关系：同位角、内错角和同旁内角；并利用这些关系求未知角。
Understand and use the relationship between parallel lines cut by a transversal: corresponding angles, alternate interior angles, and co-interior (same-side interior) angles; use these to find unknown angles
学习证据 / Evidence
- 在平行线图中识别同位角、内错角和同旁内角
- 运用沿截线平移的概念解释内错角为什么相等
- 综合运用角度关系求平行线图中的未知角
- Identify alternate, corresponding, and co-interior angle pairs in a diagram with parallel lines
- Explain why alternate angles are equal using the concept of translation along the transversal
- Find missing angles in a parallel-line diagram using a combination of angle relationships
评估问题 / Assessment
如果{{name}}在图中看到两条平行线被一条截线所截形成的Z形或F形，能否识别出相等的角，并解释它们为什么相等？
If {{name}} sees a Z-shape or F-shape formed by two parallel lines and a crossing line in a diagram, can they identify the equal angles and explain why they’re equal?