ACA Review for Minor 3.3

Front

What is the definition of a missing angle in geometry?

Back

A missing angle is an angle that is not given but can be calculated using the properties of angles, such as the sum of angles in a triangle or a straight line.

Front

How do you find the missing angle in a triangle?

Back

To find the missing angle in a triangle, subtract the sum of the known angles from 180 degrees.

Front

What is the constant of proportionality?

Back

The constant of proportionality is a constant ratio between two variables, often represented as 'k' in equations.

Front

How do you identify the constant of proportionality from a graph?

Back

The constant of proportionality can be identified by finding the ratio of the y-value to the x-value for any point on the line.

Front

What does a constant of proportionality of k = 5 mean in a real-world context?

Back

It means that for every unit increase in x, y increases by 5 units.

Front

What is the significance of a proportional relationship?

Back

A proportional relationship means that two quantities maintain a constant ratio, allowing for predictable changes.

Front

How can you tell if an equation shows a proportional relationship?

Back

An equation shows a proportional relationship if it can be expressed in the form y = kx, where k is a constant.

Front

What is an example of a proportional relationship in everyday life?

Back

An example is the relationship between distance and time when traveling at a constant speed.

Front

What does it mean if the constant of proportionality is 45 mph?

Back

It means that an object travels 45 miles for every hour.

Front

What is the sum of angles in a triangle?

Back

The sum of angles in a triangle is always 180 degrees.