Скачать или смотреть Class - 9: Chapter Triangle, Question 6, page 124.

#Magic Maths, #Fun Maths, # CBSE, #ICSE, #Joy of Maths, Fun with numbers. To know more read "JOY OF LEARNING MATHEMATICS" (Teacher's Manual) Written by M. S. Solanki, Published by "SMILE INDIA EDUCARE", Bhopal. Order through.... Email: [email protected] M S Solanki is a well known Educator, Trainer, Innovator and Author of nearly 40 books, recipient of many NATIONAL AND INTERNATIONAL Awards. He has given presentation in many National and International Mathematics Conference in NCERT, I I T Mumbai, K V S and arranged more than 90 independent workshops on the theme of "JOY OF LEARNING MATHEMATICS". He has worked on an idea to set low cost Mathematics lab in 1984-88 and Mathematics Practical for classes 9 and 10. CBSE adopted it around 2004. This videos can be used by the teachers and their trainers for capacity building program during workshops and In-service Teachers Training program. Students can make use of these videos to learn their subject contents.
Wishing you all the best.
Jai Guru Dev, Jai Maharishi.