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Co - ordinate Geometry 2D Geometry
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Q.
The perimeter of a triangle is 20 and the points (-2, -3) and (-2, 3) are two of the vertices of it. The locus of the third vertex is
A.
B.
C.
D.
None
E.
None of the above
View Answer
Correct choice: A
Explanation:
Ans:
A (-2, -3), B (-2, 3). Let the third vertex be P= (x, y). AB = 6 PA+PB+AB = 20 PA+PB=20-AB=20-6 = 14 (1) The locus of P is
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