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Revision Notes

Concurrent Lines

NIOS · Class 10 · Maths

Quick revision notes for Concurrent Lines — NIOS Class 10 Maths. Key concepts, formulas, and definitions for last-minute revision.

37 questions24 flashcards5 concepts

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A diagram illustrating different ways two or more distinct lines can interact in a plane: intersecting lines, parallel lines, and concurrent lines.
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Key Topics to Revise

1

1. Basic idea of concurrency

  • Three lines in a plane may be parallel, intersect in one point, intersect in two points, or intersect at most in three points.
  • Lines that pass through the same point are called concurrent lines.
  • The common point is called the point of concurrency.
2

2. Angle bisectors and the incentre

  • An angle bisector divides an angle into two equal parts.
  • A triangle has three angle bisectors.
  • The three angle bisectors of a triangle are concurrent.
3

3. Perpendicular bisectors and the circumcentre

  • A perpendicular bisector of a side bisects the side at right angles.
  • A triangle has three sides, so three perpendicular bisectors can be drawn.
  • The three perpendicular bisectors of the sides of a triangle are concurrent.
4

4. Altitudes and the orthocentre

  • An altitude is a perpendicular drawn from a vertex to the opposite side.
  • A triangle has three vertices, so three altitudes can be drawn.
  • The three altitudes of a triangle are concurrent.

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Full Notes

Key Concepts

Three or more lines that meetA triangle has three angle bisectorsA triangle has three perpendicular bisectorsAn altitude is a perpendicular drawnA median joins a vertex

Frequently Asked Questions

What are the important topics in Concurrent Lines for NIOS Class 10 Maths?
Key topics in Concurrent Lines include Concurrent Lines in Triangles - Complete Overview, Concurrent Lines Overview, Concurrent Lines in Triangles - Complete Overview. These are the concepts NIOS Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Concurrent Lines — NIOS Class 10 Maths?
Understand the core concepts first, then work through the 37 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

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

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