Common Core maths standard · High School Geometry

HSG-CO.B.8

Explain how ASA, SAS and SSS (and AAS) follow from rigid motions — and why SSA and AAA are not enough. One game practises it.

High School · Geometry

Transformations · Congruence & similarity · Right-triangle trig · Circles

1 arcade

Arcade HSG-CO.B.8 · HSG-CO.B.7

Matching ticks and arcs whizz by. Is that enough to prove the triangles congruent — and by which rule?