Measuring Height with Mirrors and Similar Triangles

What is the purpose of placing the mirror at a level spot at a convenient distance from the object?

• To make the mirror easier to see

• To increase the distance for better visibility

• To avoid breaking the mirror

• To ensure the light reflects at the same angle it arrives

Why are the two triangles considered similar in the mirror method?

• Due to the angle-angle similarity

• Because they have the same area

• Because they have the same color

• Because they are drawn in the same picture

What ensures that the angles where the light enters and reflects are the same?

• The color of the light

• The law of reflection

• The distance from the object

• The mirror's shape

Why is it important that objects are perpendicular to the ground in the mirror method?

• To prevent the mirror from tilting

• To make the setup look neat

• To ensure accurate angle measurements

• To avoid shadows interfering with measurements

What does the angle-angle similarity principle state about the triangles?

• They are always right triangles

• They have two pairs of congruent angles

• They must be congruent

• They have the same number of sides

How is the height of the school building estimated using the mirror method?

• By measuring the distance from the mirror to the building

• Using a ruler directly on the building

• By comparing the proportions of the similar triangles

• Calculating the area of the triangles

What role does the distance from Jim to the mirror play in the calculations?

• It is used to calculate the base of the triangle

• It is irrelevant to the calculations

• It helps determine the angle of incidence

• It is used to adjust the mirror's position

What is the correct proportion setup for solving the triangle similarity in Jim's example?

• 600 over 100 equals x over 150

• 100 over 600 equals 150 over x

• 150 over x equals 100 over 600

• x over 150 equals 600 over 100

What mathematical operation is used to solve for the height of the school building once the proportions are set?

• Addition

• Subtraction

• Multiplication

• Cross multiplication

What is the final calculated height of the school building?

• 90 meters

• 900 centimeters

• 900 meters

• 90 centimeters