Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9th

Consider the given pairs of triangles and say whether each pair is that of congruent triangles. If the triangles are congruent, say ‘how’; if they are not congruent say ‘why’ and also say if a small - Mathematics

Sum

Consider the given pairs of triangles and say whether each pair is that of congruent triangles. If the triangles are congruent, say ‘how’; if they are not congruent say ‘why’ and also say if a small modification would make them congruent:

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Solution

In ΔABD and ΔCDB

AB = CD ...(Given)

AD = BC ...(Given)

BD is common

By SSS congruency

ΔABD ≅ ΔCDB

Concept: Criteria for Congruence of Triangles - SSS Congruence Criterion

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Chapter 4: Geometry - Exercise 4.1 [Page 143]

Q 3. (ii) Q 3. (i)Q 3. (iii)

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Samacheer Kalvi Mathematics Class 9th Tamil Nadu State Board

Chapter 4 Geometry
Exercise 4.1 | Q 3. (ii) | Page 143

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Consider the given pairs of triangles and say whether each pair is that of congruent triangles. If the triangles are congruent, say ‘how’; if they are not congruent say ‘why’ and also say if a small - Mathematics

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