For the following data: 11 25 17 13 18 23 60 28 8 32 42 20 23 90 71 23 6

Find the following:
(a) Range

(b) Mid-Range

(c) Median

(d) Mode

(e) Mean

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