Centroid

Orthocenter

Circumcenter

Circumcircle

Incenter

Incircle

Medial triangle

Pedal triangle

Trisecting a line

Nine point circle

Mid-segment triangle

Orthic triangle

Equilateral triangle, given a side

Square, given a side

Isosceles triangle, given base and altitude

Triangle Centers (H, G, C, I)

Triangle Centers with Euler Line

Hexagon, given a side

Octagon, given a side

Parallegram, given a side

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