Outside the middle school program / Intercept theorem (Thales) 1 exercises corrected

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1. Unclassified financial years E.4209 Consider the figure below (units not respected) : 1 Show that the straight lines ( CR ) and ( SE ) are parallel. 2 Calculate the length SE . 3 We know that the triangle CRO is a reduction of the triangle OSE . Give the reduction coefficient. 4 Knowing that the area of triangle OSE is 6 √ 11 cm 2 , show that CRO is 0.96 11 cm 2 https://chingmath.fr chapExoCorrec/4209 sacados/4209 Antilles-Guyanes Septembre 2007 La configuration en papillon n'appartient pas au socle commun CORSE3;6cm2cm3;2cm5cm8cm