If the vertices of a parallelogram PQRS taken in order are P(3,4), Q(-2,3) and R(-3,-2),then the coordinates of its fourth vertex S are
Question
If the vertices of a parallelogram PQRS taken in order are , and , then the coordinates of its fourth vertex S are
Solution
To find the coordinates of the fourth vertex S of the parallelogram PQRS, we can use the fact that opposite sides of a parallelogram are parallel and equal in length.
Step 1: Find the vector representing the direction from P to Q.
- The vector from P to Q is given by (x2 - x1, y2 - y1) = (-2 - 3, 3 - 4) = (-5, -1).
Step 2: Add this vector to the coordinates of R to find the coordinates of S.
- Adding the vector (-5, -1) to the coordinates of R (-3, -2) gives us: (x, y) = (-3 + (-5), -2 + (-1)) = (-8, -3).
Therefore, the coordinates of the fourth vertex S are (-8, -3).
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