Centroid of a Triangle

Othocenter of a Triangle

Circumcenter of a Triangle

Circumcircle of a Triangle

Incenter of a Triangle

Construct a Medial Triangle

Construct the Orthocenter of a Mid-segment Triangle.

Construct the Orthic Triangle

Construct the Pedal Triangle

Construct the Center of the Nine-Point Circle of a Triangle

Construct the Nine-point Circle

Trisect a Line Segment

Construct an Equilateral Triangle Given a Side

Construct an Isosceles Triangle Given the Base and Altitude

Construct the Triangle Centers H, G, C, and I

Construct the Triangle Centers with the Euler Line

Construct a Hexagon Given a Side

Construct an Octagon Given a Side

Construct a Pentagon Given a Side

Construct a Pentagon Given the Radius

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