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In the figure below, AB = BC = AD, angle B =
90º, angle CAD = x and angle ACD = 45º - x. Find x. Try to use elementary geometry (Euclid's Elements.)
See
also: Art 00
PicSketch - Pencil Sketch & Drawing Photo Filter Effects
PicSketch by Softease Tech Co., Limited is a photo sketch app
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iPhone and iPad, to turn photo into
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