A Tale of Three Intersecting Lines MCQ: 7th Math Chapter 7 Quiz

1. The sum of the three interior angles of any triangle is always __.

2. An obtuse-angled triangle has one angle __ 90°.

3. A triangle has three sides and three ___ that meet at its vertices.

4. A right triangle has __ right angle(s).

5. To construct ∆ABC given AB, AC, and ∠A, one first draws AB, then constructs ∠A, and marks C on the ___.

6. A triangle with two equal sides is called ___.

7. A triangle with sides 4 cm, 5 cm and included angle A = 45° is constructed by drawing AB, ∠A, and marking C on an arc of radius ___.

8. The construction of an equilateral triangle with side AB uses two circles of radius AB centered at A and B. The third vertex is their ___.

9. An altitude of a triangle is a __ from a vertex to the opposite side.

10. In an equilateral triangle, all three sides are equal and all three angles are each ___°.