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Vidaara.orgClass 10 · Mathematics
CodeVID-M10-20-LB-01
Locus Equidistant from Two Points — Assignment
Chapter: Loci
Topic: Locus of a Point Equidistant from Two Fixed Points
Maximum Marks: 35
Time: 75 minutes
Name: ____________________ Roll No.: __________ Date: ____________

General Instructions

  • All questions are compulsory.
  • Section A carries 1 mark each, Section B 2 marks, Section C 3 marks and Section D 5 marks.
  • Show all working for Sections B, C and D. Only final answers are given at the end — for full solutions, raise your doubts with your teacher.
Section A — Multiple Choice Questions 5 × 1 = 5 marks
1.
The locus equidistant from two fixed points is the:
  • A.circle
  • B.perpendicular bisector
  • C.angle bisector
  • D.midpoint
2.
This locus is a:
  • A.curve
  • B.straight line
  • C.circle
  • D.point
3.
It passes through the ___ of the segment.
  • A.endpoint
  • B.midpoint
  • C.centre
  • D.origin
4.
It is ___ to the segment joining the two points.
  • A.parallel
  • B.perpendicular
  • C.equal
  • D.tangent
5.
Every point on it is equidistant from the two:
  • A.lines
  • B.fixed points
  • C.circles
  • D.axes
Section B — Short Answer (2 marks) 4 × 2 = 8 marks
6.
Name the locus equidistant from $A$ and $B$.
7.
Through which point does it pass?
8.
Is it parallel or perpendicular to $AB$?
9.
Is the perpendicular bisector a line or a curve?
Section C — Short Answer (3 marks) 4 × 3 = 12 marks
10.
Describe the locus of a point equidistant from two points $A$ and $B$.
11.
Find the equation of the locus equidistant from $(0,0)$ and $(4,0)$.
12.
Where and at what angle does the perpendicular bisector meet $AB$?
13.
Find the locus equidistant from $(0,0)$ and $(0,6)$.
Section D — Long Answer (5 marks) 2 × 5 = 10 marks
14.
Find the equation of the locus of a point equidistant from $A(1,2)$ and $B(5,6)$.
15.
Two points $A$ and $B$ are $8$ cm apart. Describe the locus of a point equidistant from $A$ and $B$ and state its relation to the midpoint of $AB$.

Answer Key

Section A — Multiple Choice Questions
  1. (B) perpendicular bisector
  2. (B) straight line
  3. (B) midpoint
  4. (B) perpendicular
  5. (B) fixed points
Section B — Short Answer (2 marks)
  1. The perpendicular bisector of $AB$.
  2. The midpoint of $AB$.
  3. Perpendicular.
  4. A straight line.
Section C — Short Answer (3 marks)
  1. The perpendicular bisector of $AB$.
  2. $x=2$.
  3. At its midpoint, at $90^\circ$.
  4. $y=3$.
Section D — Long Answer (5 marks)
  1. $x+y=7$.
  2. The perpendicular bisector of $AB$, passing through its midpoint at $90^\circ$.
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