2014 · Q69
For the next two (2) items that follow: ABCD is a trapezium in which AB is parallel to CD. Let M be the midpoint of BC. Consider the following statements:
- 1'Area of triangle ADM − Area of triangle ABM' is always equal to area of triangle DCM, if AB = CD.
- 2Half of area of triangle ABM is equal to one-eighth of area of trapezium ABCD, if AB = CD.
Which of the above statements is/are correct?
Elementary MathematicsQuadrilaterals and Polygons
- A1 only
- B2 only
- CBoth 1 and 2
- DNeither 1 nor 2
Explanation
With AB = CD: area(ADM) − area(ABM) = bh/2 − bh/4 = bh/4 = area(DCM), and (1/2)·area(ABM) = bh/8 = (1/8)·area(ABCD).