Angles are classified as acute (<90°), right (90°), obtuse (90°–180°), straight (180°), and reflex (>180° but <360°). Each type reflects a specific range of rotation between the angle’s arms.
Class 6 NCERT Ganita Prakash Chapter 2 Lines and Angles
class 6 Mathematics Textbook Chapter 2 question answer
Angles are categorized based on their degree measure:
1. Acute angles are less than 90° (e.g., 30°).
2. Right angles are exactly 90°, forming an “L” shape.
3. Obtuse angles are between 90° and 180° (e.g., 120°).
4. Straight angles measure exactly 180°, forming a straight line.
5. Reflex angles are greater than 180° but less than 360° (e.g., 270°).
These classifications help in analyzing rotations and shapes in geometry.
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