Constructing Isosceles Triangles

Explain how to construct isosceles triangles.

Tiling

Tile a square patio with triangular tiles.

Slicing Triangles

Cut any given triangle into triangles of equal area.

Prime Scalene

Find the smallest possible perimeter of a scalene triangle.

Triangles Inside a Trapezoid

Use the area of a triangle to transform a trapezoid into different quadrilaterals.

Area Formulas

Investigate the areas of triangles in a variety of ways.

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.