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Chapter 17

Triangles — Statement I-II Type Questions

Class - 7 Concise Mathematics Selina



Statement I-II Type Questions

Question 11

Statement 1 : In an obtuse angled triangle, two angles of the triangle are always acute.

Statement 2 : A triangle with one or more obtuse angle (more than 90°) is called an obtuse-angled triangle.

Which of the following options is correct?

  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.

Answer

Since a triangle can have only one obtuse angle, the other two angles must be acute.

Thus, statement 1 is true.

A triangle can have only one obtuse angle, not "one or more"; an obtuse-angled triangle is a triangle with exactly one obtuse angle.

Thus, statement 2 is false.

Hence, option 3 is the correct option.

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