Understanding Angles and Their Measurements

What is the difference between a line and a line segment?

• Both a line and a line segment extend infinitely.

• Both a line and a line segment have fixed lengths.

• A line segment has a fixed length, while a line extends infinitely.

• A line has a fixed length, while a line segment extends infinitely.

What is the term for the side of an angle where measurement begins?

• Axis

• Vertex

• Initial side

• Terminal side

How is a positive angle measured?

• Clockwise

• Vertically

• Counterclockwise

• Horizontally

Which angle measures exactly 90 degrees?

• Right angle

• Obtuse angle

• Acute angle

• Straight angle

What are two angles called if their sum is 180 degrees?

• Quadrantal angles

• Co-terminal angles

• Supplementary angles

• Complementary angles

What is a quadrantal angle?

• An angle that measures exactly 90 degrees

• An angle whose terminal side lies on the x-axis or y-axis

• An angle that measures exactly 180 degrees

• An angle that is less than 90 degrees

What are co-terminal angles?

• Angles that have the same initial and terminal sides

• Angles that add up to 90 degrees

• Angles that add up to 180 degrees

• Angles that are less than 90 degrees

How many minutes are in one degree?

• 120

• 30

• 60

• 90

What is the decimal equivalent of 1 second in degrees?

• 1/60

• 1/3600

• 1/360

• 1/600

How can you convert degrees, minutes, and seconds into decimal notation using a calculator?

• By manually calculating each conversion

• By using the angle function and entering the values

• By using the trigonometric functions

• By using the graphing function