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
(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.
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