Triangles in the Coordinate Plane

This Demonstration allows you to manipulate the endpoints of a triangle in a Cartesian coordinate system and finds the perimeter and area of the triangle. The perimeter is found by summing the distances between the endpoints of successive sides and the area is found using Heron's formula.

SNAPSHOTS

  • [Snapshot]
  • [Snapshot]
  • [Snapshot]

DETAILS

Heron's formula: If , , and are the side lengths of the triangle, define , the semiperimeter of the triangle. Then the area is given by .
    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.







Related Curriculum Standards

US Common Core State Standards, Mathematics