Chapter 9: Areas of Parallelograms and Triangles

1 : The area of the figure formed by joining the mid-points of the adjacent sides of a rhombus with diagonals 12 cm and 16 cm is
(A) 48 cm²            (B)64 cm²                 (C)96 cm²           (D)192 cm²
Solution: (A)

2.The median of a triangle divides it into two
(A) triangles of equal area

(B) congruent triangles
(C) right triangles

(D) isosceles triangles
Solution:

3.In which of the following figures (Fig. 9.3), you find two polygons on the same base and between the same parallels?
(A) (B)
(C)(D)
Fig. 9.3
Solution:

4.The figure obtained by joining the mid-points of the adjacent sides of a rectangle of sides 8 cm and 6 cm is :
(A)a rectangle of area 24 cm²          (B)a square of area 25 cm²
(C)a trapezium of area 24 cm²         (D)a rhombus of area 24 cm² 
Solution:

5.In Fig. 9.4, the area of parallelogram ABCD is :
(A)AB × BM
(B)BC × BN
(C)DC × DL
(D)AD × DL
Solution: