Midpoint formula
Two-dimensional geometry · Mathematics
Study notes
Q: A(-1,5), B(3,-3). Find the midpoint M. Then verify M is equidistant from A and B. M = ((−1+3)/2, (5−3)/2) = (1, 1). MA = √[(1+1)² + (1−5)²] = √(4+16) = √20. MB = √[(3−1)² + (−3−1)²] = √(4+16) = √20. ✓ Equal.