Author note — to cover

Congruent means identical in shape and size, mirror images included: decide congruence by matching corresponding sides and angles, including shapes on grids related by reflection, rotation or translation. The formal triangle criteria SSS, SAS, ASA and RHS follow on the next pages. Both tiers. (G7, G19)

• Fluency — direct questions on congruent shapes, 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).