ABC is an isosceles triangle. Investigate the properties of the triangle by moving the sliders.

- List the properties of an isosceles triangle.
- Complete the following: "If two sides of a triangle are equal, then the angles opposite these sides are ..."
- What is the converse of the statement in question (2)?
- If the base angles of a triangle are equal then the triangle is said to be isosceles. By this definition, what can be said of an equilateral triangle?