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Chapter 27 of 31
Syllabus

The Planes

Kerala Board · Class 12 · Mathematics

Complete topic list for The Planes in Kerala Board Class 12 Mathematics. Key concepts, sub-topics, and what to focus on for board exams.

45 questions20 flashcards5 concepts
4 Topics · Kerala Board Class 12 Mathematics

Topics in The Planes

1

1. Basic Concepts and General Equation of a Plane

  • A plane is defined as a surface where any line joining two points on it lies entirely within the plane
  • General equation of a plane: ax + by + cz + d = 0, where a, b, c are not all zero
  • The coefficients a, b, c represent the direction ratios of the normal to the plane
2

2. Equation of Plane Through Three Points

  • Three non-collinear points uniquely determine a plane
  • Use determinant form for systematic solution
  • Method involves solving system of linear equations
3

3. Intercept Form and Normal Form

  • Intercept form shows where plane cuts coordinate axes
  • Normal form uses perpendicular distance from origin
  • Both forms provide geometric insight into plane's position
4

4. Angle Between Planes and Conditions for Parallelism/Perpendicularity

  • Angle between planes equals angle between their normals
  • Perpendicular planes have perpendicular normals
  • Parallel planes have parallel normals

Key Concepts

The general form ax + byFor plane through point (x₁When plane cuts axes at (aEquation lx + my + nzFor planes a₁x + b₁y +

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Frequently Asked Questions

What are the important topics in The Planes for Kerala Board Class 12 Mathematics?

The Planes covers several key topics that are frequently asked in Kerala Board Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.

Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.