Give a definition for each of the following terms

Asked by admin @ 20/08/2021 in Math viewed by 310 People

"Question 2 Give a definition for each of the following terms. Are there other terms that need to be defined first? What are they, and how might you define them? (i) parallel lines (ii) perpendicular lines (iii) line segment (iv) radius of a circle (v) square

Class 9 - Math - Introduction to Euclid's Geometry Page 85"

Answered by admin @ 20/08/2021

Yes there are other terms that need to be
defined first.

We need the following terms:

A) Point
b) line. c) Plane d) Ray e) angle. f) Circle
g) quadrilateral

1. Point is that point which has
no part i.e, a point is an exact location.

2. A line is a Breadth less length.
Lines can be extended on both directions.

3. A plane surface is a surface
which lies evenly with the straight lines on itself.

4. A part of a LINE which has only
one endpoint is called a ray.

5. An angle is the figure formed
by two rays with common initial point.

6. A circle is the set of all
those points In a plane whose distance from a fixed point remains constant. The
fixed point is called the centre of the circle.

7. A simple closed figure made of
4 line segment is called a quadrilateral.

=========================================================

Parallel lines:

Two lines in a plane are said to be
parallel if they have no common. Parallel Lines do not intersect each other.
The distance between two Parallel Lines always remains the same.

Perpendicular lines:

Two lines in a plane are said to be perpendicular
if they intersect each other at 1 right angle.

Line segment:

The Definite length between two points is
called the line segment. A line segment has two endpoints.

Radius of a circle:

The distance from the centre to a point on
the circle is called the radius of a circle.

Square:

A quadrilateral in which all four angles
are right angles and four sides are equal is called a square.

=========================================================

Hope this will help you....

Give a definition for each of the following terms

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