Back to Class IX Mathematics
Classes IX & X Mathematics

Chapter 7: Triangles

Standard NCERT & CBSE aligned study curriculum. Master concepts, track accuracy, revise weak areas, and challenge yourself with 9 customized practice modes.

Class Syllabus Selection

This topic is taught in multiple grades. Switch classes to see specific curriculum details:

Example 1

Triangle Side Check

Can a triangle be constructed with sides 3 cm, 4 cm, and 8 cm?
ABCPQR

Calculation Steps:

  1. 1Apply side inequality sum rule: a + b > c.
  2. 2Evaluate smallest sides sum: 3 + 4 = 7.
  3. 3Compare with third side: 7 < 8.
  4. 4Since sum does not exceed third side, it is impossible.
SolutionNo