Author note — to cover

Chain point, straight-line, vertically-opposite, parallel-line, triangle and quadrilateral facts, stating a reason for every step, including algebraic setups and explain-why questions. This is where G6-style angle reasoning is rehearsed. Circle theorems are Higher pages in a later group; bearings journeys sit on Mensuration. Both tiers. (G3, G6)

• Fluency — direct questions on multi-step angle problems, limited to this lesson's stated scope (4 questions).
• Application — use the same skill in unfamiliar or contextual questions without introducing a later method (4 questions).
• Check — questions built around the exclusions and likely misconceptions named in the lesson brief (4 questions).