Rectangles lie on sides AB, BC, and AC of ABC above. What is the sum of the measures of the angles marked?
A. 90
B. 180
C. 270
D. 360
E. It cannot be determined from the information given
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Rectangles lie on sides AB, BC, and AC of ABC above. What is the sum of the measures of the angles marked?
A. 90
B. 180
C. 270
D. 360
E. It cannot be determined from the information given