9th Class Mathematics Chapter 11 TestUNIT 11: Loci and Construction

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. What is the angle formed by two intersecting rays from a vertex in a triangle called? 

   1. Complementary angle

   2. Opposite angle

   3. Vertical angle

   4. Exterior angle

2. A triangle with all sides and angles equal is called a: 

   1. Right triangle

   2. Isosceles triangle

   3. Equilateral triangle

   4. Scalene triangle

3. The intersection of the three angle bisectors of a triangle is called:

   1. Orthocenter

   2. Centroid

   3. Circumcenter

   4. Incenter

4. What is the sum of the interior angles of any triangle? 

   1. 180°

   2. 360°

   3. 90°

   4. 120°

5. Locus of points equidistant from a fixed line is/are ......:

   1. Circle

   2. Perpendicular bisector

   3. Angle bisector

   4. Parallel lines

6. What is the angle bisector of a triangle? 

   1. A line passing through a vertex

   2. A line that divides an angle into two equal parts

   3. A line joining midpoints of sides

   4. A line perpendicular to a side

7. Locus of points equidistant from two intersecting lines is ......:

   1. Circle

   2. Perpendicular bisector

   3. Angle bisector

   4. Parallel lines

8. Which locus defines a point that is a fixed distance from a given point?

   1. Perpendicular bisector

   2. Circle 

   3. Angle bisector

   4. Line segment

9. A triangle is a closed figure having.

   1. Two sides 

   2. Three sides 

   3. Four sides 

   4. Five sides

10. The centroid of a triangle divides each median into two parts in a ratio of:

    1. 1:2

    2. 2:1

    3. 1:3

    4. 3:1