Question

The figure below is dilated by a scale factor of 44 to form angle, X, prime, Y, prime, Z, prime∠X
′
Y
′
Z
′
. What is the measure of angle, X, prime, Y, prime, Z, prime∠X
′
Y
′
Z
′
?

Answer 1

A dilation preserves angles. So ∠X′Y′Z′ has the same measure as the original ∠XYZ. (If you give the measure of ∠XYZ, that is the measure of ∠X′Y′Z′.)