Janet Shiver

Tool Name

Construction

Instructions

Centriod

Finds the centroid of a triangle.

Move any of the vertices.

Orthocenter

Finds the orthocenter of a triangle.

Move any of the vertices.

Circumcenter

Finds the circumcenter of a triangle.

Move any of the vertices.

Euler Line

Constructs the Euler line which includes the centroid, orthocenter, and circumcenter of a triangle.

Move any of the vertices.

Incenter

Finds the incenter of a triangle.

Move any of the vertices.

Medial Triangle

Constructs a medial triangle.

Move any of the vertices.

Orthic Triangle

Constructs an orthic triangle.

Move any of the vertices. Notice what happens as the triangle becomes obtuse.

Incircle

Constructs the incircle of a triangle.

Move any of the vertices.

Pedal Triangle

Constructs any triangle and its pedal triangle.

Construct the triangle and then a given point.  Move any of the vertices.

Nine Point Circle

Constructs a triangle and its nine point circle.

Move any of the vertices.

Nine Point Circle with Center

Constructs the center of the nine point circle.

Move any of the vertices.

Equilateral Triangle

Constructs an equilateral triangle from any given side.

Move vertices to adjust size.

Square

Constructs a square from a given side.

Move vertices to adjust size.

Isosceles Triangle

Constructs an isosceles triangle from a given base and height.

Move vertices to adjust the length of the base or the height of the triangle.

Golden Ratio

Divides a segment into two parts that form a golden ratio.

Move either endpoint to change the length.