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Give a definition for perpendicular lines. Are there other terms that need to be defined first? What are they, and how might you define them? - Mathematics

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Give a definition for perpendicular lines. Are there other terms that need to be defined first? What are they, and how might you define them?

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Solution

Perpendicular lines :-

If two lines intersect each other at 90°, then these are called perpendicular lines.

We are required to define line and the angle before defining perpendicular lines.

Concept: Euclid’S Definitions, Axioms and Postulates
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APPEARS IN

NCERT Class 9 Maths
Chapter 5 Introduction to Euclid's Geometry
Exercise 5.1 | Q 2.2 | Page 85

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