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SAI INTERNATIONAL SCHOOL
Sub: Mathematics
Class -IX

Ch-8 Quadrilaterals Home Assignment -4

1 ABCD is a parallelogram and E and F are the centroid of triangle ABD and BCD
respectively, then EF =
(a) AE (b) BE (c) CE (d) DE

2 ABCD is a parallelogram, M is the midpoint of BD and BM bisects B, then
AMB =
0
0
0
0
(a) 45 (b) 75 (c) 90 (d) 60

3 Points A, B, C, and D are midpoints of the sides of square JETS. If the area of JETS is 36,
the area of ABCD is
(a) 9 b) 18 (c) 9 2 (d) 18

4
In the accompanying above diagram of
rectangle ABCD, mABE = 30 and mCFE
=144. Find mBEF.

(a) 36° (b) 60° (c) 84° d) 90°

5 A quadrilateral must be a parallelogram if one pair of opposite sides is
a)congruent, only. (b) parallel and the other pair of opposite sides is congruent.
(c) congruent and parallel. (d) parallel only

6 The perimeter of a rhombus is 60. If the length of its longer diagonal measures 24,
the length of the shorter diagonal is
(a) 20 (b) 18 (c) 15 (d) 9

11 Let ABCD be a trapezium in which AB DC and E is the mid-point of