On the set of axes below, pentagon ABCDE is congruent to A"B"C"D"E". Which describes a sequence of rigid motions that maps ABCDE onto A"B"C"D"E"?
С
B
D
A. a rotation of 90° counterclockwise about the
origin followed by a reflection over the x-axis
B. a rotation of 90° counterclockwise about the
origin followed by a translation down 7 units
C. a reflection over the y-axis followed by a
reflection over the x-axis
D. a reflection over the x-axis followed by a
rotation of 90° counterclockwise about the
origin
А
E
D'
E
C
B
A

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step-by-step explanation:

mark brainliest!

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

answer: group b.

step-by-step explanation: