## Area Tool

Grade:

6-8

Standards:

Math Content:

Geometry

Use this tool to determine how the length of the
base and the height of a figure can be used to determine its area. Can you find
the similarities and differences between the area formulas for trapezoids,
parallelograms, and triangles?

Investigate trapezoids, parallelograms, and
triangles, using the tabs along the top of the frame. Drag the vertices to
explore different sizes of each shape.

The "Add to Table" button can be used to record data in the table, which may be useful in trying to identify patterns.

Investigate various sizes for each of the
different shapes.

- What is the formula for finding the area of a trapezoid? How is the length of the midline involved in the formula?
- What is the formula for finding the area of a parallelogram? How is it related to the formula for finding the area of a rectangle?
- What is the formula for finding the area of a triangle? How is it related to the formula for finding the area of a rectangle?