Puzzle
Geometry & measuresPuzzle
Four Fours:Congruent triangles
Sixteen pairs of congruent triangles, turned or flipped, sorted by the condition that proves them. Some cards give lengths and angles, some use ticks and arcs, and a right angle turns up in SAS and ASA cards as well as RHS. One per A4.
A free key stage 3 and GCSE geometry and measures puzzle with answers, spec code G5. It goes with the lesson on congruent triangles.
Lesson
Congruent triangles
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