3 Point Triangle Vertices, Calculator And Formula - RedCrab Software

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Vector Calculation and Angles

Vectors and the dot product enable angle calculations:

Form Vectors
  • Side vectors from point differences
  • Vector AB = (x₂-x₁, y₂-y₁)
  • Magnitude |AB| = side length
  • Direction and length combined
Calculate Angles
  • Dot product of two vectors
  • cos(α) = (u⃗ · v⃗) / (|u⃗| |v⃗|)
  • Application of law of cosines
  • All three interior angles calculable

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