Important Concepts of Triangles For RRB Stage – II

Mathematics is an equally important section for RRB Stage II exam and has an even more abundant importance in some other exams conducted by RRB & SSC. Generally, there are questions asked related to basic concepts and formulas of Arithmetic Progression. 
To let you make the most of Mathematics section, we are providing important facts related to Arithmetic Progression. Also, Railway Exam Stage II is nearby with bunches of posts for the interested candidates in which Mathematics is a major part. We have covered important notes and questions focusing on these prestigious exams. We wish you all the best of luck to come over the fear of Mathematics section.


Centroid [Intersecting Point of medians of the triangle] : 

  • Centroid divides median of a triangle in ratio 2 : 1
  • area ∆ ABE =  1/2 area ∆ ABC
  • area ∆ AGB = 1/3 area ∆ ABC
  • area ∆ AGF = 1/6 area ∆ ABC

  • AO = OD
  • OG = 1/3 AO
  • AB² + BC² = 2BD² + 1/2 AC²
  • AB² + AC² = 2AE² + 1/2  BC²
  • CA² + CB² = 1/2 AB² + 2 FC²
  • Area ∆ FGE = 1/12 area ∆ ABC
  • 3 × (sum of side square) = 4x (sum of median square) 
  • 3 × (AB² + BC² + AC²) = 4x (AE² + BD² + CF²)
  • area ∆ ABC = 4/3 area ∆ (Formed by taking AD, BF, CE, as sides of a triangle)

Note: To study More Download The PDF Given Below 

You May also like to read:


Download Upcoming Government Exam Calendar 2021


Download success!

Thanks for downloading the guide. For similar guides, free study material, quizzes, videos and job alerts you can download the Adda247 app from play store.

Thank You, Your details have been submitted we will get back to you.

Leave a comment

Your email address will not be published. Required fields are marked *


Forgot Password?

Sign Up
Forgot Password
Enter the email address associated with your account, and we'll email you an OTP to verify it's you.

Reset Password
Please enter the OTP sent to