Mathematics, 09.09.2021 14:00, mooneyhope24

Let ABC be a right triangle at A, the altitudes AH. E and F are the feet of the perpendicular drawn from H to AB and AC. a) calculate HA, HB and HC and the area of quadrilateral BEFC knowing AB=3m, AC=4cm
b)M and N are midpoints of HB and HC. calculate the area of quadrilateral EFMN

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Let ABC be a right triangle at A, the altitudes AH. E and F are the feet of the perpendicular drawn...