NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 6: Triangles - Multiple Choice Questions
Question 5

Question.  5

In an isosceles triangle, one angle is 70°. The other two angles are of

(i) 55° and 55°

(ii) 70° and 40°

(iii) any measure

In the given option(s) which of the above statement(s) are true?

(a)

(a) (i) only

(b)

(b) (ii) only

(c)

(c) (iii) only

(d)

(d) (i) and (ii)

Detailed Answer with Explanation:

If one angle is 70°, the other two must add up to 110°. In isosceles case: either 70° and 40°, or 55° and 55°. Both (i) and (ii) are possible.

NCERT Exemplar Solutions Class 7 – Mathematics – Unit 6: Triangles – Multiple Choice Questions | Detailed Answers