Exploring Proportions and Similar Figures with Shadows

The video tutorial explains how to determine the height of objects using shadows and proportions. It begins with an introduction to the concept, followed by practical examples involving a building, Clifford, and Bigfoot. The method involves setting up proportions based on known heights and shadow lengths, then using cross-multiplication to solve for unknown heights.

What method is introduced to find the height of an object?

• Using shadows and proportions

• Using a ruler

• Using a ladder

• Using a drone

In the first example, what is the height of the stop sign?

• 4 units

• 7 units

• 18 units

• 31.5 units

What is the length of the shadow of the stop sign?

• 31.5 units

• 18 units

• 4 units

• 7 units

How do you calculate the height of the building in the first example?

• Multiply 4 by 18 and divide by 7

• Multiply 7 by 4 and divide by 18

• Multiply 18 by 4 and divide by 7

• Multiply 7 by 18 and divide by 4

What is the height of the building in the first example?

• 4 units

• 18 units

• 7 units

• 31.5 units

In the second example, what is the length of the bone's shadow?

• 5 units

• 4 units

• 36 units

• 45 units

How tall is Clifford in the second example?

• 36 units

• 4 units

• 5 units

• 45 units

In the third example, what is the height of the boy?

• 5.1 feet

• 5 feet

• 3 feet

• 7 feet

What is the length of Bigfoot's shadow in the third example?

• 11.9 feet

• 7 feet

• 5.1 feet

• 3 feet

How tall is Bigfoot in the third example?

• 3 feet

• 11.9 feet

• 7 feet

• 5.1 feet