Angles are formed when two lines meet at a point. We classify angles based on their measure in degrees. An acute angle is less than 90°, an obtuse angle is greater than 90° but less than 180°, a right angle is exactly 90°, and a straight angle is exactly 180°. Understanding these differences is crucial for geometry and beyond! Let's practice!
Match the term with its correct definition:
| Term | Definition |
|---|---|
| 1. Acute Angle | A. An angle measuring exactly 180° |
| 2. Obtuse Angle | B. An angle measuring greater than 90° and less than 180° |
| 3. Right Angle | C. An angle measuring less than 90° |
| 4. Straight Angle | D. An angle measuring exactly 90° |
| 5. Angle | E. The space between two intersecting lines or surfaces at or close to the point where they meet. |
Complete the following paragraph using the words: right, acute, obtuse, and straight.
An angle that measures less than 90° is called an ________ angle. An angle that measures more than 90° but less than 180° is called an ________ angle. An angle that measures exactly 90° is a ________ angle, and an angle that measures 180° is a ________ angle.
Can an angle be both acute and obtuse? Explain your reasoning.
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