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Definition1

Title: Angles

Grade Lesson s4-l7

Explanation: The best way to understand PSAT-4 is by looking at some definitions. Take turns and read each definition for easy understanding.

Definition

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Definition: Angles

An angle is a fundamental geometric concept that measures the rotation between two intersecting lines or line segments.

The angle is typically denoted using the symbol "θ" (theta) or sometimes "∠ABC," where "A," "B," and "C" are three points on the rays, with "B" being the vertex.

The measurement of an angle is given in degrees (°) or radians (rad).

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Explanation:

An acute angle measures less than 90° at the vertex. An obtuse angle is between 90° and 180°. A right angle precisely measures 90° at the vertex. An angle measuring exactly 180° is a straight angle. A reflex angle measures between 180°- 360°. A complete angle measure equals 360°.