1963 AHSME Problems/Problem 12
Problem
Three vertices of parallelogram are with and diagonally opposite. The sum of the coordinates of vertex is:
Solution
Graph the three points on the coordinate grid. Noting that the opposite sides of a parallelogram are congruent and parallel, count boxes to find out that point is on . The sum of the x-coordinates and y-coordinates is , so the answer is .
See Also
1963 AHSC (Problems • Answer Key • Resources) | ||
Preceded by Problem 11 |
Followed by Problem 13 | |
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