- Manipulate the triangle by dragging the vertices.
- Hit the
*Subdivide*button to divide the triangle into smaller pieces. - Explore the relationship between the triangle and rectangle areas by dragging and rotating the coloured pieces to fit exactly onto the rectangle.
- Use the
*Angles*and*Lengths*buttons to hide or show the angle sizes and side lengths respectively. - Select the
*Vertex*transformation button to move triangle vertices (this is the default), or one of the other transformation buttons to manipulate the triangle without changing the angles.