Drag F to create a family of parallelograms with the same base and the same height.
Drag E along the line to create a family of parallelograms with the same height.

Measuring the Height of a Parallelogram.

Click on the point tool and create a point on the length of the parallelogram.
Create another point directly opposite the point you created.
Create a third point at a vertex of the figure.
Use the segment tool to connect the first 2 points you created.
Use the angle tool to measure the insert the angle the segment makes with the base. Start from the last point and move clockwise.
Adjust the vertical line to make 90 degrees with the base.
Click on the distance tool and measure the height of the figure.

(A). Study the parallelograms below and answer the following question. You can click on the (+) to enlarge the figures if necessary.

(B). Study the examples and non-examples of bases and heights of parallelograms below.

Examples: The dashed segments in these drawings represent the corresponding height for the given base.

Non-examples: The dashed segments in these drawings do not represent the corresponding height for the given base.

Select all the statements that are true about bases and heights in a parallelogram.

(1). For each parallelogram here, use the SEGMENT tool to construct its base and height. Drag a label next to each segment to denote what it represents.

(2). For the parallelograms above, record these lengths in the table below. In the last row, write an expression (using b and h) for the area of any parallelogram.

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