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This Concept Map, created with IHMC CmapTools, has information related to: 3D geometry relation to real world -- architecture, 115.182m or half the base, s equals 18,637mm, that same circle's area equals the area of a rectangle whose length is twice the pyramid height (Φ) and whose width is the width (2 units) of the pyramid. so then the length of the rectangle, HI, I'm ???? Danny, Why would the Egyptians work so much to the point where it seemed unnessacary? Well, because IT WAS MADE BY ALIENS!, that same circle's area equals the area of a rectangle whose length is twice the pyramid height (Φ) and whose width is the width (2 units) of the pyramid. so... we know that the radius of the circle, ta-da! the golden ratio but they almost did., The Great Pyramid that had ta-da! The Golden Ratio, tada the golden ratio, let's find the length of the slanted height. (s), find the length of the slanted height. (s) To do that, we need to know both the height, "special" triangles with ta-da! The Golden Ratio, They are: base: 230.363m, phi is found by solving following quadratic equation: Φ^2-Φ-1= 0, ta-da! The Golden Ratio is found by subdividing a square into two equal triangles,, they almost did. To prove this, Let's do some Geometry!, NOT the Golden Ratio but it's only off by one-hundred-thousandth., base perimeter may equal the circumference of a circle whose radius is equal to the height of the pyramid. and that same circle's area equals the area of a rectangle whose length is twice the pyramid height (Φ) and whose width is the width (2 units) of the pyramid., Let's do some Geometry! So,uh,allegedly, The slanted height, subdividing a square into two equal triangles, then, slice both the half-squares diagonally, 1.618 is the number larger than 1.