Abbah, this old man is wrestling with these same formulas for the postal department retests! The distance is √[(x₂-x₁)²+(y₂-y₁)²], the section formula divides a line m:n, and the triangle area is half of |x₁(y₂-y₃)+x₂(y₃-y₁)+x₃(y₁-y₂)|. My life says these are not just for exams—they live in the straight line of my old jeep's route on a map, and in measuring my granddaughter's playground plot over video call, trying to explain how much land her laughter fills.
#exams#study
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