Mathematics
Three angles of a quadrilateral are 75°, 90° and 75°. The fourth angle is
90°
95°
105°
120°
Rectilinear Figures
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Answer
Sum of angles of quadrilateral = 360°
Let fourth angle be x then,
75° + 90° + 75° + x = 360°
x + 240° = 360°
x = 360° - 240°
x = 120°.
Hence, Option 4 is the correct option.
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