NCERT Solutions for Class 9 Maths Chapter 5

Important NCERT Questions

Introduction To Euclid’s Geometry

NCERT Books for Session 2022-2023

CBSE Board and UP Board Others state Board

EXERCISE 5.1

Page No:85

Questions No: 2

(i) parallel lines

(ii) perpendicular lines

(iii) line segment

(iv) radius of a circle

(v) square

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(1) Parallel lines: Two lines, having no common points, are parallel lines. [Undefined term: The distance between the two lines are constant]

(i) Perpendicular lines: Two lines which form angle of 90° with each other, are perpendicular lines.

(iii) Line segment: The line which have two end point, is a line segment.

(iv) Radius of a Circle: The line segment from the centre of circle to the circle is radius of circle.

(v) Square: A quadrilateral having all sides equal and all angles right angle.