Question

In a triangle, there are 3 different angles. Which of the following statements is/are definitely true about the angles?
(i) Sum of all the angles is ${100}^o$.
(ii) One angle is obtuse and other two are acute and right angle respectively.
(iii) Sum of any two angles is always less than ${180}^o$.

• A. (i) only
• B. (ii)and (iii) both
• C. (iii) only
• D. (i) and (iii) both

Answer 1

The correct option is C (iii) only

Statements (i) and (ii) are not true because, sum of all angles of a triangle is ${180}^o$ and if one angle is obtuse, then other angles must be acute.