Simona si andrei au impreuna 648 de lei. andrei are o suma de trei ori mai mare decat a simonei. cei doi copii hotarascsa cumpere un joc lego care costa 128 de lei. afla cati bani ii raman fiecarui copil, stiind ca ei au cheltuit sume egale. dati-mi va rog raspuns si explicatie xx dau coroana xx

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2