GEOMETRY RULE COPIED! 📐

Area of Triangle

A = ½bh
Concept: Half of the base (b) multiplied by the vertical height (h).

Area of a Square

A = a²
Concept: Side length (a) multiplied by itself.

Area of a Circle

A = πr²
Concept: Pi (π) multiplied by the square of the radius (r).

Area of Rectangle

A = l × w
Concept: Length (l) multiplied by Width (w).

Area of Trapezium

A = ½(a + b)h
Concept: Half the sum of parallel sides times height.

Area of Parallelogram

A = b × h
Concept: Base (b) multiplied by vertical height (h).

Area of an Oval

A = πab
Concept: Pi times semi-major axis (a) times semi-minor axis (b).

Area of Sector

A = (θ/360)πr²
Concept: Fraction of the total circle area based on angle θ.

Area of Rhombus

A = ½ × d₁ × d₂
Concept: Half the product of its two diagonals (d₁ and d₂).

Legacy of Geometry 📐

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2000 BC | ANCIENT EGYPT

Geometry (literally "Earth Measurement") was born from necessity. Egyptians used it to redraw boundary lines after the Nile flooded and to align the massive Pyramids of Giza.

300 BC | EUCLID OF ALEXANDRIA

Known as the "Father of Geometry," Euclid wrote 'The Elements'. It is the most successful textbook in history, establishing the logical proofs we still use in schools today.

1637 AD | RENÉ DESCARTES

Descartes bridged the gap between shapes and numbers by inventing the Coordinate Plane. This "Analytic Geometry" allowed us to solve geometric problems using algebra.

"Did you know? The word 'Hypotenuse' comes from the Greek word meaning 'stretched against,' referring to the way ancient builders stretched ropes to form perfect right angles!"