The “Triangle Geometry” function calculates the vertices, circles, and angles of a triangle after the vertices, sides, and angles are entered, and plots them.

These include, among others:

• Perimeter
• Area
• Angles
• Circumcircle
• Circles inscribed
• Incircle
• Altitudes
• Side bisectors
• Distinct points
  • Center of the incircle
  • Center of gravity
  • Center of the circumcircle
  • Intersection of altitudes
  • Center of the Feuerbach circle
  • Lemoine point
  • Gergonne point
  • Nagel point
  • Midpoint
  • Spieker point
  • …