In an isosceles triangle ABC with AB = AC, if AD is perpendicular to BC, then △ABD ≅ △ACD by:

Type: MCQ • Marks: 1

A. AAA criterion

B. RHS criterion (or SAS/SSS)

C. Not congruent

D. SSA criterion

Explanation

∠ADB = ∠ADC = 90°, AB = AC (hypotenuse), AD = AD (common side) => RHS applies.

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Class 7th Ganita Prakash 2

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