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CBSE Lessons
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Post a LessonAnswered 2 days ago Learn CBSE/Class 9/Class 9 Mathematics/Chapter 5 Introduction to Euclid’s Geometry/EXERCISE - 5.1
Kartikey Kaushik
Simplify Complex Concepts — Learn Maths & Physics from an Experienced M.Tech Graduate
(i) Parallel Lines
Definition: Two lines in the same plane that never meet or cross each other, no matter how far they are extended.
Related Term:
Line: A straight path that extends without end in both directions.
(ii) Perpendicular Lines
Definition: Two lines that intersect (cross each other) at a right angle (90°).
Related Terms:
Line: A straight path extending without end in both directions.
Right Angle: An angle of 90 degrees.
(iii) Line Segment
Definition: A part of a line that has two endpoints and a definite length.
Related Term:
Line: A straight path extending endlessly in both directions.
(iv) Radius of a Circle
Definition: The distance from the center of a circle to any point on its circumference.
Related Terms:
Circle: A closed curve in which all points are equidistant from the center.
Center of a Circle: The point in the middle of a circle that is equidistant from every point on the circumference.
(v) Square
Definition: A quadrilateral with four equal sides and four right angles.
Related Terms:
Quadrilateral: A four-sided polygon.
Right Angle: An angle of 90 degrees.
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