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Congruence of Triangles and Inequalities in a Triangle — Maths STD 9 — Question

Gujarat BoardEnglish MediumSTD 9MathsCongruence of Triangles and Inequalities in a Triangle1 Mark
Question
In $\triangle\text{ABC, }\angle\text{C}=\angle\text{A},$ BC = 4cm and AC = 5cm. then, AB =?
  1. 4cm
  2. 5cm
  3. 8cm
  4. 2.5cm
✓

Answer

  1. 4cm

Solution:

In $\triangle\text{ABC,}$

$\angle\text{C}=\angle\text{A}$

$\Rightarrow\text{AB = BC}$ (sides opposite to equal angles are equal)

$\Rightarrow\text{AB = 4cm}$

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