Fall 24/25

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object where the dimensions are proportional to the actual size, using a specific scale (e.g., 1 cm = 25 cm).

Front

How do you calculate the length of an object in a scale drawing?

Back

To find the length in a scale drawing, divide the actual length by the scale factor. For example, if a car is 400 cm long and the scale is 1 cm = 25 cm, the drawing length is 400 cm / 25 = 16 cm.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where their ratio remains constant. For example, if one quantity doubles, the other also doubles.

Front

How can you identify a proportional relationship in a table?

Back

To identify a proportional relationship in a table, check if the ratios of corresponding values are equal. If they are, the relationship is proportional.

Front

What is percent decrease?

Back

Percent decrease is a measure of how much a quantity has decreased relative to its original value, expressed as a percentage. It is calculated as: ((original value - new value) / original value) x 100.

Front

How do you calculate the percent decrease from $50 to $40?

Back

Percent decrease = ((50 - 40) / 50) x 100 = 20%.

Front

What does a map scale represent?

Back

A map scale represents the ratio of a distance on the map to the actual distance it represents in real life (e.g., 1 cm = 20 km).

Front

How do you find the actual distance between two points on a map?

Back

To find the actual distance, multiply the distance on the map by the scale factor. For example, if two cities are 5 cm apart on a map with a scale of 1 cm = 20 km, the actual distance is 5 cm x 20 km/cm = 100 km.

Front

What is the perimeter of a triangle?

Back

The perimeter of a triangle is the total length of all its sides. It is calculated by adding the lengths of each side.

Front

How do you calculate the perimeter of a triangle with sides 9 cm, 12 cm, and 15 cm?

Back

Perimeter = 9 cm + 12 cm + 15 cm = 36 cm.