2. Tiecare, ştiind că Bianca are cu 20 mai puține?
9. în două cutii sunt 21 caiete. Câte caiete sunt în fiecare cutie, dacă
în prima sunt cu 11 caiete mai mult?
est
3.
e е

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