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Mathematics

Statement (1): AB = AC and D is any point on side BC of triangle ABC.

Statement 1 - AB = AC and D is any point on side BC of triangle ABC. Statement 2 - AB > AD. Isosceles Triangles, Concise Mathematics Solutions ICSE Class 9.

Statement (2): AB > AD.

  1. Both the statements are true.

  2. Both the statements are false.

  3. Statement 1 is true, and statement 2 is false.

  4. Statement 1 is false, and statement 2 is true.

Triangles

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Answer

Since AB = AC, ΔABC is an isosceles triangle.

The angles opposite to equal sides of a triangle are equal.

⇒ ∠B = ∠C

∠ADB is an exterior angle to ΔADC.

Therefore, ∠ADB > ∠C

⇒ ∠ADB > ∠B

⇒ AB > AD (Side opposite to the largest angle in a triangle is the longest side)

∴ Both the statements are true.

Hence, option 1 is the correct option.

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