Solve.In a triangular cross-section of a lean-to for water fowl in an aviary, the second angle is 4 times as large as the first angle. The measure of the third angle is 60° greater than that of the first angle. How large are the angles?
A. 58°, 62°, 32°
B. 20°, 160°, 160°
C. 58°, 224°, 116°
D. 20°, 80°, 80°
Answer: D
Mathematics
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