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On a Number Line, Points A, B and C Are Such that D(A,C) = 10, D(C,B) = 8 . Find D(A, B) Considering All Possibilities. - Geometry

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प्रश्न

On a number line, points A, B and C are such that d(A,C) = 10, d(C,B) = 8 .  Find d(A, B) considering all possibilities.

योग

उत्तर

There are only two possibilities.

Case 1 : When point C is between the points A and B.

We have, 

d(A, C) = 10; d(C, B) = 8

Now, d(A, B) = d(A, C) + d(C, B)

= 10 + 8

∴ d(A, B) = 18

Case 2 : When point B is between the points A and C.

We have,

d(A, C) = 10; d(C, B) = 8

Now, d(A, C) = d(A, B) + d(B, C)

So, d(A, B) = d(A, C) − d(B, C)

= 10 − 8

∴ d(A, B) = 2

Therefore, When point B is between the points A and C then d(A, B) = 2

∴ d(A, B) = 18 or d(A, B) = 2

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अध्याय 1: Basic Concepts in Geometry - Practice set 1.1 [पृष्ठ ५]

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बालभारती Geometry (Mathematics 2) [English] 9 Standard Maharashtra State Board
अध्याय 1 Basic Concepts in Geometry
Practice set 1.1 | Q 4. | पृष्ठ ५
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