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📏 How do I find side length, perimeter & area from coordinates? Level 1 support
Horizontal side (same y): length = |x₂ − x₁|.
Vertical side (same x): length = |y₂ − y₁|.
Use absolute value so the length is always positive — even when
points are in different quadrants. Example: from (−3, 2) to (4, 2)
the length is |4 − (−3)| = |7| = 7 units.
Perimeter = add all the side lengths.
Area of a rectangle = length × width.
ES: Lado horizontal = |x₂ − x₁|; lado vertical = |y₂ − y₁|. El
valor absoluto mantiene la longitud positiva.