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10th
Maths
Constructions
Construction of Similar Triangles
LMN ∼ XYZ . In LMN, LM =...
MATHS
△LMN∼ △XYZ. In △LMN,LM=6 cm,MN=6.8 cm,LN=7.6 cm and
XY
LM
=
5
4
; Construct △XYZ.
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ANSWER
The sides of △XYZ will be
4
5
times the sides of △LMN
∴XY=
4
5
×LM=
4
5
×6=7.5 cm
YZ=
4
5
×MN=
4
5
×6.8=8.5 cm
XZ=
4
5
×LN=
4
5
×7.6=9.5 cm
Construction:
Step 1: Draw base XZ=9.5 cm with a ruler.
Step 2: Place the compass on point X and measure an arc with length of the compass as XY=7.5 cm.
Step 3: Place the compass on point Z and measure an arc with length of the compass as YZ=8.5 cm.
Step 4: Mark the intersection point of the arcs in steps 2 and 3 as point Y and draw lines joining X−Y and Z−Y.
△XYZ is the required triangle.
solution
Answer:
Mirra Alfassa was born in Paris in 1878 to a bourgeois family. In her youth, she traveled to Algeria to practice occultism under Max Théon. After returning, while living in Paris, she guided a group of spiritual seekers. In 1914, she traveled to Pondicherry, India and met Sri Aurobindo and found in him "the dark Asiatic figure" of whom she had had visions in her childhood. During this first visit, she helped publish a French version of a periodical Arya which serialized most of Sri Aurobindo's post-political prose writings. During First World war she left Pondicherry along with her husband Paul Richard. After a 4-year stay in Japan, in 1920, she returned to Pondicherry for good. Gradually, as more and more people joined her and Sri Aurobindo, she organised and developed Sri Aurobindo Ashram. In 1943, she started a school in the ashram and in 1968 established Auroville, an experimental township dedicated to human unity and evolution. She died on 17 November 1973 in Pondicherry.
The experiences of the last thirty years of Mirra Alfassa's life were captured in the 13-volume work Mother's Agenda by Satprem who was one of her followers.
Early life Edit
Childhood Edit
Mirra Alfassa as a child c. 1885
Mirra Alfassa
Mirra Alfassa was born in 1878 in Paris to Moïse Maurice Alfassa a Turkish Jewish father, and Mathilde Ismalun an Egyptian Jewish mother. They were a bourgeois family, and Mirra's full name at birth was Blanche Rachel Mirra Alfassa. She had an elder brother, Mattéo Mathieu Maurice Alfassa, who later held numerous French governmental posts in Africa. The family had just migrated to France a year before Mirra was born. Mirra was close to her grandmother Mira Ismalum (née Pinto), who was a neighbour and who was one of the first women to travel alone outside Egypt.[1][2]
Mirra learnt to read at the age of seven and joined school very late at the age of nine. She was interested in various fields of art, tennis, music and singing, but was a concern to her mother owing to an apparent lack of permanent interest in any particular field.[3][4] By the age of 14 she had read most of the books in her father's collection, which is believed to have helped her achieve mastery of French.[5] Her biographer Vrekhem notes that Mirra had various occult experiences in her childhood but knew nothing of their significance or relevance. She kept these experiences to herself as her mother would have regarded occult experiences as a mental problem to be treated.[6] Mirra especially recalls at the age of thirteen or fourteen having a dream or a vision of a luminous figure whom she used to call Krishna but had never seen before in real life.
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