Finding Missing Edge Lengths on Composite 3D Prisms

This video tutorial teaches how to identify missing edge lengths in composite 3D prisms by locating parallel edges. It begins with a basic example using rectangles to explain that parallel sides are congruent. The tutorial then progresses to identifying parallel sides in composite figures and solving for missing line segments. Finally, it covers working with 3D composite figures made up of rectangular prisms, demonstrating how to use parallel edges to find unknown lengths.

What is the relationship between parallel sides in a rectangle?

• They are congruent.

• They are perpendicular.

• They are different lengths.

• They form a triangle.

If a rectangle has one side of 7 meters and a parallel side of 4 meters, what is the length of the missing side?

• 6 meters

• 2 meters

• 3 meters

• 5 meters

In a composite figure, if a horizontal line segment is 19 meters and another is 14 meters, what is the length of the missing segment if they add up to 9 meters?

• 8 meters

• 7 meters

• 6 meters

• 5 meters

How can you determine the length of a missing edge in a composite 3D figure?

• By measuring it directly.

• By using the properties of parallel edges.

• By guessing based on the figure's appearance.

• By using a calculator.

In a composite 3D figure, if a vertical edge is 5 inches and another is 2 inches, what is the length of the missing edge if they add up to 5 inches?

• 1 inch

• 2 inches

• 3 inches

• 4 inches