Author note — to cover

Right angle, hypotenuse and one other side: the single case where a non-included angle suffices, and why — Pythagoras fixes the third side. Require the right angle to be marked or justified before RHS is quoted. Both tiers. (G5)

• Fluency — direct questions on congruence by rhs, 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).