aria paralelogramului = lat1 * lat2 * sin (latura1, latura2)
24√3=8*6*sin∡(AD,AB)
sin ( AB, AD)=24√3/48=√3/2⇒m∡(AD,AB)=60°=m∡(BC, DC)
⇒m ∡( AD. DC )=m∡9AB, BC)=180-60=120° (in paralelogram, unghiurile opuse suint congruente iar cele alaturate, suplementare)