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Mathematics

Area of triangle using determinants

In this Class 12 Mathematics topic from the chapter Determinants, students learn how to find the area of a triangle when the coordinates of its three vertices are given. They use a 3×3 determinant, apply the area formula, and take the absolute value to obtain a positive result. The topic also helps students understand that a zero determinant indicates collinear points, so no triangle is formed, while reinforcing determinant expansion, coordinate substitution, and clear step-by-step algebraic calculation.

Easy · Level 1 · 1 questions

TOPIC PRACTICE

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  1. (-∞, 2), all real numbers less than 2
  2. (-∞, 2], all real numbers less than or equal to 2
  3. [2, ∞), all real numbers greater than or equal to 2
  4. (2, ∞), all real numbers greater than 2

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