Measuring angles using a Protractor Worksheets|Grade 5 - Free Printable

To solve the problem of measuring the angles in the provided worksheet, you need to use a protractor. Here’s a step-by-step explanation of how to measure each angle:

Steps to Measure Angles Using a Protractor:

1. Identify the Vertex: The vertex is the point where the two lines of the angle meet.
2. Align the Protractor: Place the center of the protractor exactly on the vertex of the angle.
3. Align One Side: Align one side of the angle with the zero line of the protractor. Ensure that the zero line is along one arm of the angle.
4. Read the Angle: Look at the other arm of the angle and see where it intersects the protractor scale. Read the angle value from the scale.

Measuring Each Angle:

Since I cannot physically measure the angles using a protractor, I will describe the general approach for each type of angle typically found in such worksheets:

#### Types of Angles:
- Acute Angle: Less than 90°
- Right Angle: Exactly 90°
- Obtuse Angle: Between 90° and 180°
- Straight Angle: Exactly 180°

#### General Observations:
1. Angle 1: Appears to be an obtuse angle (greater than 90°).
2. Angle 2: Appears to be an acute angle (less than 90°).
3. Angle 3: Appears to be an acute angle (less than 90°).
4. Angle 4: Appears to be a right angle (exactly 90°).
5. Angle 5: Appears to be an acute angle (less than 90°).
6. Angle 6: Appears to be an obtuse angle (greater than 90°).
7. Angle 7: Appears to be an obtuse angle (greater than 90°).
8. Angle 8: Appears to be an obtuse angle (greater than 90°).
9. Angle 9: Appears to be an acute angle (less than 90°).
10. Angle 10: Appears to be an obtuse angle (greater than 90°).
11. Angle 11: Appears to be a right angle (exactly 90°).
12. Angle 12: Appears to be an acute angle (less than 90°).

Example Measurements:

- Angle 1: If it looks like 120°, write 120°.
- Angle 2: If it looks like 45°, write 45°.
- Angle 3: If it looks like 60°, write 60°.
- Angle 4: Write 90° (right angle).
- Angle 5: If it looks like 30°, write 30°.
- Angle 6: If it looks like 135°, write 135°.
- Angle 7: If it looks like 110°, write 110°.
- Angle 8: If it looks like 150°, write 150°.
- Angle 9: If it looks like 50°, write 50°.
- Angle 10: If it looks like 160°, write 160°.
- Angle 11: Write 90° (right angle).
- Angle 12: If it looks like 40°, write 40°.

Final Answer:

The exact measurements depend on the actual angles in the image. Here is a placeholder for the answers:

\[
\begin{array}{ccc}
\text{Angle 1: } & \boxed{120^\circ} & \\
\text{Angle 2: } & \boxed{45^\circ} & \\
\text{Angle 3: } & \boxed{60^\circ} & \\
\text{Angle 4: } & \boxed{90^\circ} & \\
\text{Angle 5: } & \boxed{30^\circ} & \\
\text{Angle 6: } & \boxed{135^\circ} & \\
\text{Angle 7: } & \boxed{110^\circ} & \\
\text{Angle 8: } & \boxed{150^\circ} & \\
\text{Angle 9: } & \boxed{50^\circ} & \\
\text{Angle 10: } & \boxed{160^\circ} & \\
\text{Angle 11: } & \boxed{90^\circ} & \\
\text{Angle 12: } & \boxed{40^\circ} & \\
\end{array}
\]

These are example values. You should measure each angle precisely using a protractor to get the exact values.

\boxed{\text{Measure each angle using a protractor as described.}}