Measuring Angles and Types with a Protractor

What is an angle formed by?

• Two points

• Two circles

• Two lines

• Two rays

Which letter is used in the middle when naming an angle?

• Any point

• Last point on a ray

• First point on a ray

• Vertex

What type of angle measures exactly 90 degrees?

• Straight angle

• Right angle

• Obtuse angle

• Acute angle

Which angle is greater than 90 degrees but less than 180 degrees?

• Right angle

• Acute angle

• Straight angle

• Obtuse angle

What type of angle is described as 'the best-looking angle' because it is 'so cute'?

• Straight angle

• Obtuse angle

• Acute angle

• Right angle

Where should the cross of the protractor be placed when measuring an angle?

• On any point

• On the vertex

• Outside the angle

• On the ray

If the zero on the protractor is on the inner circle, which scale should you use?

• Any scale

• Inner scale

• No scale

• Outer scale

What should you do if the ray points at zero on the outer circle of the protractor?

• Ignore the numbers

• Use the outer numbers

• Reset the protractor

• Use the inner numbers

How can you extend a ray that is too short to measure?

• Ignore the measurement

• Guess the length

• Change the angle

• Use a ruler

What is the correct way to adjust a protractor when the line is not aligned?

• Turn the protractor

• Move the paper

• Redraw the angle

• Use a different protractor