Answer:
34°
Explanation:
sum interior measure = (n-1)*180 ; n is the number of sides
of the polygon
(n-1)*180
(4-2)*180
2*180
360° ( sum interior measure )
The angles of the quadrilateral are ( 90 , 90 , w , 146 )
90+90+146+w = 360
326+w = 360
w = 360-326
w = 34°
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