Term 3 Coordinate Geometry Book Back Questions

9th Standard

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Maths

Time : 00:45:00 Hrs
Total Marks : 30
    5 x 1 = 5
  1. The coordinates of the point C dividing the line segment joining the points P(2, 4) and Q(5, 7) internally in the ratio 2:1 is______.

    (a)

    \((\frac{7}{2},\frac{11}{2})\)

    (b)

    (3, 5)

    (c)

    (4, 4)

    (d)

    (4, 6)

  2. The ratio in which the x-axis divides the line segment joining the points (6, 4) and (1, −7) is ______.

    (a)

    2:3

    (b)

    3:4

    (c)

    4:7

    (d)

    4:3

  3. In what ratio does the y-axis divides the line joining the points (−5, 1) and (2, 3) internally ______.

    (a)

    1 :3

    (b)

    2 :5

    (c)

    3 :1

    (d)

    5 :2

  4. If (1,−2), (3, 6), (x, 10) and (3, 2) are the vertices of the parallelogram taken in order, then the value of x is ______.

    (a)

    6

    (b)

    5

    (c)

    4

    (d)

    3

  5. The centroid of the triangle with vertices (−1, −6), (−2, 12) and (9, 3) is

    (a)

    (3, 2)

    (b)

    (2, 3)

    (c)

    (4, 3)

    (d)

    (3, 4)

  6. 4 x 2 = 8
  7. A(−3,2), B(3,2) and C(−3,−2) are the vertices of the right triangle, right angled at A. Show that the mid-point of the hypotenuse is equidistant from the vertices.

  8. A car travels at an uniform speed. At 2 pm it is at a distance of 180 km and at 6pm it is at 360 km. Using section formula, find at what distance it will reach 12 midnight.

  9. ABC is a triangle whose vertices are A(3, 4), B(−2, −1) and C(5, 3) . If G is the centroid and BDCG is a parallelogram then find the coordinates of the vertex D.

  10. If  \(\left( \frac { 3 }{ 2 } ,5 \right) ,\left( 7,\frac { -9 }{ 2 } \right) \)and\((\frac{13}{2},\frac{-13}{2})\) are mid-points of the sides of a triangle, then find the centroid of the triangle.

  11. 4 x 3 = 12
  12. The point (3, −4) is the centre of a circle. If AB is a diameter of the circle and B is (5, −6), find the coordinates of A.

  13. the mid-point formula to show that the mid-point of the hypotenuse of a right angled triangle is equidistant from the vertices (with suitable points).

  14. If (x, 3), (6, y), (8, 2) and (9, 4) are the vertices of a parallelogram taken in order, then find the value of x and y.

  15. If the centroid of a triangle is at (−2, 1) and two of its vertices are (1, −6) and (−5, 2), then find the third vertex of the triangle.

  16. 1 x 5 = 5
  17. The mid-points of the sides of a triangle are (5, 1), (3, −5) and (−5, −1). Find the coordinates of the vertices of the triangle.

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