three angles of a quadrilateral are in the ratio 1 ratio 5 ratio 6 the mean of these angles is 80 degree find all the four angles
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Interesting Facts about India:
•India never invaded any country in her last 100000 years of history.
•When many cultures were only nomadic forest dwellers over 5000 years ago, Indians established Harappan culture in Sindhu Valley (Indus Valley Civilization)
•The name 'India' is derived from the River Indus, the valleys around which were the home of the early settlers. The Aryan worshippers referred to the river Indus as the Sindhu.
•The Persian invaders converted it into Hindu. The name 'Hindustan' combines Sindhu and Hindu and thus refers to the land of the Hindus.
•Chess was invented in India.
•Algebra, Trigonometry and Calculus are studies, which originated in India.
•The 'Place Value System' and the 'Decimal System' were developed in India in 100 B.C.
•The World's First Granite Temple is the Brihadeswara Temple at Tanjavur, Tamil Nadu. The shikhara of the temple is made from a single 80-tonne piece of granite. This magnificent temple was built in just five years, (between 1004 AD and 1009 AD) during the reign of Rajaraja Chola.
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