Measuring Angles: A Comprehensive Assessment

What is the primary tool used for measuring angles?

• Compass

• Ruler

• Protractor

• Divider

Why does a protractor have two scales?

• To look more complex

• To measure more accurately

• To measure different units

• To allow for ease of use depending on angle orientation

Where should the vertex of an angle be aligned on a protractor?

• Outside the protractor

• Anywhere on the protractor

• At the edge of the protractor

• At the center hole or the intersection of lines

Which scale should be used if the angle's ray points to the right?

• None

• Outer scale

• Inner scale

• Either scale

What type of angle measures exactly 90 degrees?

• Acute

• Obtuse

• Straight

• Right

What is an angle called if it is less than 90 degrees?

• Straight

• Right

• Acute

• Obtuse

What should you do first before measuring an angle with a protractor?

• Guess the angle size

• Estimate the angle size

• Measure immediately

• Draw a new angle

What type of angle is greater than 90 but less than 180 degrees?

• Straight

• Obtuse

• Right

• Acute

What common mistake might occur if the protractor is not aligned correctly at zero?

• All of the above

• Measuring the angle too large

• Measuring the angle too small

• Choosing the wrong scale

Which of the following is a correct step in using a protractor?

• Align the vertex anywhere on the protractor

• Use the scale that starts from the highest number

• Align one ray at the zero mark of the correct scale

• Ignore the vertex alignment