What are the values of a and b number 8

Step-by-step explanation:

(LOOK AT THE PICTURE)

ΔABC, ΔDBA and ΔDAC are similar (AAA). Therefore the corresponding sides are in proportion:

We have AB = b, AD = 20, AC = 29 and DC = 21. Substitute:

            cross multiply

          divide both sides by 21

and in proportion:

We have BD = a, AD = 20 and DC = 21. Substitute:

          cross multiply

  divide both sides by 21

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.

5+2x=a

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