Area Formulas
Investigate the areas of triangles in a variety of ways.
Author Archive for: corrill
Entries by InterMath
Interactive Pythagoras
Use the concept of area to demonstrate the Pythagorean Theorem.
Planting Trees
Help a farmer plant four trees.
Half As Much May Be Right
Explore triangles inscribed in semicircles.
Balancing the Triangular Totter
Locate the center of mass of a triangle.
To Be or Not to Be
Determine the necessary conditions to create a triangle.
Outside Looking In
Identify the sum of the exterior angles in a triangle.
Remotely Interior
Compare exterior angles with remote interior angles.
Shark Attack!
Find the best path from the inside of a triangle to its sides.
Sum It Up!
Explore the sum of interior angles of a triangle.