# Lesson Worksheet: Measuring Angles Mathematics • 4th Grade

In this worksheet, we will practice measuring angles in degrees using a protractor and estimating the sizes of angles.

**Q2: **

What is measured using a protractor?

- Aangles
- Blength
- Cweight

**Q3: **

Which of the following statements correctly defines an angle?

- AAn angle is the figure formed by two rays with a common end point.
- BAn angle is the part of a straight line beginning at a given point and extending in one direction to a predetermined length.
- CAn angle is the part of a line that connects two points.
- DAn angle is the part of a straight line beginning at a given point and extending limitlessly in one direction.
- EAn angle is the point where two rays intersect.

**Q4: **

Which of these is a unit used to measure an angle?

- AGrams
- BDegrees
- CMeters
- DCentimeters

**Q7: **

Complete the following using , , or : .

- A
- B
- C

**Q13: **

Determine whether the angle shown is acute, right, or obtuse.

- Aright
- Bacute
- Cobtuse

**Q14: **

Complete the following statement: The sum of two acute angles is an obtuse angle.

- Aalways
- Bsometimes
- Cnever

**Q16: **

What is the measure of a straight angle?

**Q17: **

Fill in the blank using greater than, equal to, or less than: The measure of a right angle is the measure of an acute angle.

- Aless than
- Bequal to
- Cgreater than

**Q18: **

Is the measure of a right angle less than, greater than, or equal to the measure of an obtuse angle?

- AGreater than
- BLess than
- CEqual to

**Q19: **

What is the size of a right-angle?

**Q20: **

Use , , or to complete the following: The measure of a straight angle the measure of an obtuse angle.

- A
- B
- C

**Q21: **

What is the size of an obtuse angle?

- Aless than
- Bmore than and less than
- C

**Q22: **

Which of these angles is obtuse?

- A(e)
- B(b)
- C(d)
- D(a)
- E(b)

**Q23: **

What kind of angle is ?

- Astraight angle
- Breflex angle
- Cright angle
- Dobtuse angle
- Eacute angle

**Q24: **

An acute angle is an angle whose measure is less than and more than .

- A,
- B,
- C,
- D,

**Q25: **

What is the measure of a zero angle?