Click on each link to open the GSP file.

Centriod - The intersection of the three medians of a triangle.

Circumcenter - The intersection of the perpendicular bisectors in a triangle.

Circumcircle - The circumscribe circle of the triangle. The circumcenter is the center of the circle.

Equilateral Triangle - A triangle with all three sides congruent (given a side).

Hexagon - A six-sided polygon (given a side).

Incenter - The point on the interior of the triangle that is equidistant from the three sides. The intersection of the angle bisectors.

Incenter - The point on the interior of the triangle that is equidistant from the three sides. The intersection of the angle bisectors.

Isosceles Triangle - A triangle with two congruent sides (given base and altitude).

Medial Triangle - A triangle constructed by connecting the three midpoints of the sides in a triangle.

Orthic Triangle - A triangle constructed by connecting the feet of the altitudes of a triangle.

Orthocenter - The intersection of the three lines containing the altitudes of the triangle.

Pedal Triangle - If ABC is any triangle and P is any point in the plane, the triangle formed by constructing perpendiculars to the sides of the triangle and locating the intersections is the pedal triangle for the pedal point P.

Pentagon - A five-sided polygon (given a side).

Square - A quadrilateral with four congruent sides (given a side).

Tangent Circle - Given two circles and a point on one of the circles, construct a circle tangent to the given circles.

Triangle Center (H, G, C, and I) - The orthocenter, centroid, circumcenter, and incenter of a triangle.

Triangle of Medians - Constructs the triangle of the medians (shaded).