Introduction to Euclid's Geometry

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The word 'geometry' comes from Greek words 'geo' meaning 'earth' and 'metrein' meaning 'to measure'. Geometry originated from the practical need for measuring land.

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Egyptians used geometry to redraw boundaries after Nile floods, calculate areas, compute volumes of granaries, construct canals and pyramids, and find volumes of truncated pyramids.

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The cities were well-planned with parallel roads and underground drainage. Houses had various room types. Bricks had a ratio of length:breadth:thickness = 4:2:1, showing knowledge of mensuration and p

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Sulbasutras (800 BCE to 500 BCE) were manuals of geometrical constructions in ancient India. They originated from the need to construct altars and fireplaces for Vedic rituals with specific shapes and

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Thales was a Greek mathematician credited with giving the first known proof. He proved that a circle is bisected (cut into two equal parts) by its diameter.

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'Elements' is Euclid's famous treatise that collected all known geometric work. It is divided into thirteen chapters, each called a book. It influenced the world's understanding of geometry for genera

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A point is that which has no part. However, this definition has limitations as 'part' itself needs definition. In modern geometry, a point is taken as an undefined term represented by a dot.

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A line is breadthless length. A straight line is a line which lies evenly with the points on itself. The ends of a line are points.