The video tutorial teaches how to identify missing edge lengths on composite 3D prisms by locating parallel edges. It begins with a basic example using rectangles to explain that parallel sides are congruent. This concept is extended to rectangular prisms, where parallel edges are highlighted and identified as congruent. The tutorial then moves to composite figures, demonstrating how to find missing edge lengths by analyzing parallel sides and using congruency. The final example involves a composite 3D figure made of two rectangular prisms, where missing edge lengths are determined by understanding parallelism and congruency.

What is the primary method taught in this lesson for identifying missing edge lengths in composite 3D prisms?

• Locating parallel edges

• Using a calculator

• Guessing based on the shape

• Using a ruler to measure each edge

In a rectangle, if one horizontal side is 60 meters, what can be said about its parallel side?

• It is twice as long

• It is also 60 meters

• It is longer

• It is shorter

If a 30 meter edge is highlighted in red, what can be said about the other red edges?

• They are all different lengths

• They are half the length

• They are all 30 meters

• They are twice the length

How can you determine the length of an unlabeled side in a composite figure?

• By using a calculator

• By guessing

• By using the length of a parallel side

• By measuring it directly

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

• 5 meters

• 4 meters

• 2 meters

• 3 meters

What is the length of the mystery line segment if it and a 4 meter segment add up to 9 meters?

• 6 meters

• 3 meters

• 4 meters

• 5 meters

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?

• 3 inches

• 2 inches

• 4 inches

• 1 inch

What is the length of the missing edge if all yellow edges are parallel and one is 2 inches?

• 3 inches

• 2 inches

• 4 inches

• 1 inch

How do parallel sides help in identifying missing edge lengths in composite figures?

• They make the figure easier to draw

• They make the figure look symmetrical

• They help in measuring directly

• They provide clues about congruency

What is the length of the red segment if it and a 2-inch segment add up to 5 inches?

• 1 inch

• 4 inches

• 2 inches

• 3 inches