(80 POINTS) identify the sequence of transformations that maps quadrilateral ABCD onto quadrilateral A”B”C”D” A. 180° rotation around the origin; reflection over the x-axis

B. translation (x, y)—>(x-2,y+0); reflection over the line x=-1

C. enlargement; reflection over the y-axis

D. reflection over the x-axis; reduction

I think the answer would be the b

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

51840000 cm 2

step-by-step explanation: