4th Grade Geometry - Free Printable

It looks like you've uploaded an image of a worksheet titled "Angle Classification 1", which asks students to classify angles as acute, right, obtuse, reflex, or straight based on their measures and visual representations.

Since I can't view images directly, I’ll help you solve this problem based on the typical content of such worksheets. Below is a step-by-step explanation of how to classify angles and how to complete the task correctly.

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🔍 Step 1: Understand Angle Types

Here are the definitions:

| Angle Type | Measure Range | Description |
|-----------|----------------|------------|
| Acute | Less than 90° | Smaller than a right angle |
| Right | Exactly 90° | Forms a square corner |
| Obtuse | Greater than 90° but less than 180° | Wider than a right angle but not a straight line |
| Straight | Exactly 180° | A straight line |
| Reflex | Greater than 180° but less than 360° | Larger than a straight angle (more than half a circle) |

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📐 Step 2: Analyze Each Angle in the Worksheet

Let’s assume the worksheet has several diagrams of angles. Here's how to classify each one:

#### Example 1:
- Diagram: A small "V" shape
- Classification: Acute (less than 90°)

#### Example 2:
- Diagram: A perfect L-shape
- Classification: Right (exactly 90°)

#### Example 3:
- Diagram: A wide open angle, less than a straight line
- Classification: Obtuse (between 90° and 180°)

#### Example 4:
- Diagram: A straight line
- Classification: Straight (180°)

#### Example 5:
- Diagram: An angle that goes more than halfway around a point
- Classification: Reflex (greater than 180°)

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✔ How to Fill Out the Worksheet

For each angle shown:

1. Look at the opening:
- Small → Acute
- Perfect corner → Right
- Wide but not full line → Obtuse
- Full line → Straight
- More than a line → Reflex

2. Write down the classification under “Angle:” for each diagram.

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💡 Tips

- Use a protractor if available to measure.
- If no measurement is given, use visual estimation.
- Remember: Reflex angles are greater than 180°, so they look like "bent" shapes going past a straight line.

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🧩 Sample Answers (Based on Common Diagrams)

Assuming the worksheet includes these types:

| Diagram | Classification |
|--------|----------------|
| Small V | Acute |
| Square corner | Right |
| Wide angle (like 120°) | Obtuse |
| Straight line | Straight |
| Curved angle >180° | Reflex |
| Slight bend <90° | Acute |
| Large bent angle | Reflex |
| Another wide angle | Obtuse |

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✔ Final Answer Format

You would write something like:

- Angle: Acute
- Angle: Right
- Angle: Obtuse
- Angle: Straight
- Angle: Reflex

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If you can describe the specific angles in the image (e.g., "one looks like a corner of a square", "another is almost a full circle"), I can give you exact classifications for your worksheet.

Would you like to describe the angles in the image?