In a trapezium ABCD, DC || AB, AB = 12 cm and DC = 7.2 cm. What is the length of the line segment joining the mid-points of its diagonals?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 2.4 cm
Trick [Important formula]: If E and F are mid points of diagonals AC and DB respectiely, then,
EF = (AB - CD)/2
So,
EF = (12 - 7.2)/2 = 4.8/2 = 2.4 cm