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rectangle a′b′c′d′ is a dilation of rectangle abcd . what is the scale factor?

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4

Step-by-step explanation:

the answer is 4 because its a dilation:

you divide 8 and 2 which gives you 4

then 4 and 16 which also gives you 4

hope that helped you understand  

is there a picture

step-by-step explanation:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh