Question

A figure containing angle, F, G, H∠FGH is dilated by a scale factor of 55 to form a new figure which contains angle, F, prime, G, prime, H, prime∠F
′
G
′
H
′
. angle, F, G, H∠FGH measures 129, degrees129
∘
. What is the measure of angle, F, prime, G, prime, H, prime∠F
′
G
′
H
′
?

Answer 1

129°

A dilation is a similarity transformation that preserves angle measures, so the image angle F′G′H′ has the same measure as ∠FGH.