What is the area of a triangle with the following vertices L(1, 3), M(5, 1), and N(3, 5)?
A. 3
B. 4
C. 5
D. 6
E. 7
The OA is D.
Basically, vertices are L(1, 3), M(5, 1), and N(3, 5), since only area is asked here we can subtract 1 from each of the x and y co-ordinates which makes the new points as L(0, 2), M(4, 0), and N(2, 4) which makes it a right-angled traingle framed on the x and y axes with corner at N(2, 4). i t wouldn't be hard to calculate the area of new traingle as 4sq.units.
Has anyone another strategic approach to solve this PS question? Regards!
A. 3
B. 4
C. 5
D. 6
E. 7
The OA is D.
Basically, vertices are L(1, 3), M(5, 1), and N(3, 5), since only area is asked here we can subtract 1 from each of the x and y co-ordinates which makes the new points as L(0, 2), M(4, 0), and N(2, 4) which makes it a right-angled traingle framed on the x and y axes with corner at N(2, 4). i t wouldn't be hard to calculate the area of new traingle as 4sq.units.
Has anyone another strategic approach to solve this PS question? Regards!
