Warm up of Area of a Triangle

Area of a Triangle Investigation
Questions:[br]1. What is the formula used to find the area of a triangle?[br]2. What is the formula used to find the perimeter of a triangle?[br]3. Calculate the area of the triangle DEF.[br]4. Calculate the perimeter of triangle DEF.[br]5. If you drag vertex D, what measures remain the same and what measures are different?

Information: Warm up of Area of a Triangle