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Those who wish to adopt the textbooks are required to send a request to NCERT, upon which soft copies of the books are received. The material is press-ready and may be printed by paying a 5% royalty, and by acknowledging NCERT. [11] The textbooks are in color-print and are among the least expensive books in Indian book stores. [11]
Hindi / Malayalam is introduced as the second language from first grade and Malayalam / Sanskrit is introduced as the third language from third grade. At Senior Secondary stage, there are two groups-Science and Commerce. English is a compulsory subject in all the three groups.Classes VI to X follow NCERT text books in major subjects.
Book 3 of Euclid's Elements deals with the properties of circles. Euclid's definition of a circle is: A circle is a plane figure bounded by one curved line, and such that all straight lines drawn from a certain point within it to the bounding line, are equal. The bounding line is called its circumference and the point, its centre.
Another class of numbers Kaprekar described are Kaprekar numbers. [10] A Kaprekar number is a positive integer with the property that if it is squared, then its representation can be partitioned into two positive integer parts whose sum is equal to the original number (e.g. 45, since 45 2 =2025, and 20+25=45, also 9, 55, 99 etc.)
For three circles denoted by C 1, C 2, and C 3, there are three pairs of circles (C 1 C 2, C 2 C 3, and C 1 C 3). Since each pair of circles has two homothetic centers, there are six homothetic centers altogether. Gaspard Monge showed in the early 19th century that these six points lie on four lines, each line having three collinear points.
Kumar noted her interest in books while she was dusting his book shelves, and encouraged her to first read leading authors, [7] starting with Taslima Nasreen's autobiographical Amar Meyebela (My Girlhood) about a tumultuous youth and deep anger on being born a woman in a poor society. This deeply moved Halder and turned out be a turning point ...
Indian mathematics emerged and developed in the Indian subcontinent [1] from about 1200 BCE [2] until roughly the end of the 18th century CE (approximately 1800 CE). In the classical period of Indian mathematics (400 CE to 1200 CE), important contributions were made by scholars like Aryabhata, Brahmagupta, Bhaskara II, Varāhamihira, and Madhava.
Circles" is an essay by Ralph Waldo Emerson, first published in 1841. The essay consists of a philosophical view of the vast array of circles one may find throughout nature . In the opening line of the essay Emerson states "The eye is the first circle; the horizon which it forms is the second; and throughout nature this primary figure is ...