Khan Academy (English - US curriculum)
Math by grade
Eureka Math/EngageNY
Geometry (Eureka Math/EngageNY)
Module 1: Congruence, proof, and constructions
Topic A: Basic constructions
Topic A: Basic constructions
Geometric constructions: circle-inscribed regular hexagon
Geometric constructions: angle bisector
Geometric constructions: perpendicular line through a point on the line
Geometric constructions: perpendicular bisector
Incenter and incircles of a triangle
Geometric constructions: triangle-inscribing circle
Geometric constructions: triangle-circumscribing circle
Proof: Triangle altitudes are concurrent (orthocenter)
