The measure of <Y is 40 degrees
The image that completes the question is added as an attachment.
The congruent statement ΔUVW = ΔXYZ means that:
For Y, it means that:
<Y = <V
From the figure:
<V = 180 - (70 + 70)
<V = 40
Substitute <V = 40 in <Y = <V
<Y = 40
Hence, the measure of <Y is 40 degrees
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