Measure and Classify the Angles Worksheets - Free Printable

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

Step 1: Understand the Types of Angles

- Acute Angle: Less than 90°
- Right Angle: Exactly 90°
- Obtuse Angle: Between 90° and 180°
- Straight Angle: Exactly 180°
- Reflex Angle: Between 180° and 360°

Step 2: Using a Protractor

1. Place the center of the protractor on the vertex of the angle.
2. Align one arm of the angle with the baseline of the protractor.
3. Read the angle measurement where the other arm crosses the protractor scale.

Section A: Measure the Following Angles

#### 1)
- This is an acute angle.
- Measurement: Approximately 30°.

#### 2)
- This is an obtuse angle.
- Measurement: Approximately 120°.

#### 3)
- This is a right angle.
- Measurement: 90°.

#### 4)
- This is an acute angle.
- Measurement: Approximately 45°.

#### 5)
- This is a reflex angle.
- Measurement: Approximately 270°.

#### 6)
- This is an obtuse angle.
- Measurement: Approximately 135°.

#### 7)
- This is a reflex angle.
- Measurement: Approximately 225°.

Section B: Measure the Following Angles

#### 1)
- This is an acute angle.
- Measurement: Approximately 35°.

#### 2)
- This is an acute angle.
- Measurement: Approximately 25°.

#### 3)
- This is an obtuse angle.
- Measurement: Approximately 110°.

#### 4)
- This is a reflex angle.
- Measurement: Approximately 250°.

#### 5)
- This is an obtuse angle.
- Measurement: Approximately 100°.

#### 6)
- This is a reflex angle.
- Measurement: Approximately 200°.

#### 7)
- This is a straight angle.
- Measurement: 180°.

Final Answer

Here are the measurements for all the angles:

Section A:
1. 30°
2. 120°
3. 90°
4. 45°
5. 270°
6. 135°
7. 225°

Section B:
1. 35°
2. 25°
3. 110°
4. 250°
5. 100°
6. 200°
7. 180°

$$
\boxed{
\begin{array}{ll}
\text{Section A:} & 30^\circ, 120^\circ, 90^\circ, 45^\circ, 270^\circ, 135^\circ, 225^\circ \\
\text{Section B:} & 35^\circ, 25^\circ, 110^\circ, 250^\circ, 100^\circ, 200^\circ, 180^\circ
\end{array}
}
$$