ΔABC and ΔABD are on a common base AB and AC = BD and BC = AD as shown in the given figure.

Which of the following options is true?

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SSC Selection Post 2024 (Higher Secondary Level) Official Paper (Held On: 25 Jun, 2024 Shift 4)
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  1. There are no congruent triangles in the given figure
  2. ΔABC ≅ ΔABD
  3. ΔABC ≅ ΔBAD
  4. ΔABC ≅ ΔADB

Answer (Detailed Solution Below)

Option 3 : ΔABC ≅ ΔBAD
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SSC Selection Post Phase 13 Matriculation Level (Easy to Moderate) Full Test - 01
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Detailed Solution

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Given:

ΔABC and ΔABD are on a common base AB and AC = BD and BC = AD.

Concept Used: 

Side-Side-Side rule of congruence states that two triangles are congruent if all three are equal to the corresponding sides of the other triangle.

Calculation:

In ΔABC and ΔBAD

AB = BA (Common Base)

BC = AD (Given)

AC = BD

Hence, ΔABC ≅ ΔBAD

∴ The correct option is (3).

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