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Maharashtra State BoardSSC (English Medium) 9th Standard

Rays

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Estimated time: 5 minutes
  • Introduction
  • Definition: Ray
  • Properties and Representation of a Ray
Maharashtra State Board: Class 6

Introduction

What happens when you see light streaming into your room? The light starts at the Sun and travels straight away from it, going forever in one direction until it hits something.

A Ray in geometry works exactly like that light beam. It's a special part of a straight line.

CISCE: Class 6

Definition: Ray

A ray is a portion of a line that begins at a fixed point, called its origin, and extends infinitely in one direction.

Maharashtra State Board: Class 6

Properties and Representation of a Ray

  • A ray has only one end (fixed) point, which is also known as its initial point.
  • A ray extends indefinitely in only one direction
  • An unlimited number of rays can be drawn with the same initial point.
  • A ray is a part of a line.
  • A ray starting from point P and passing through Q is denoted by `vec(PQ)`.

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