3 Which equations are equivalent to 7+m= Am-- 7 ? Select three options. ? m= 10 4. 10 4 Om-- 5 2 11 0 4+m. 1 4 0 5 + 15 4

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