Geometrymedium · Past Paper
In a cyclic quadrilateral ABCD, if angle A = 3x and angle C = x, find the value of x.
A30
B45
C60
D90
✓ Correct Answer: B — 45
Opposite angles in cyclic quadrilateral sum to 180: 3x + x = 180, 4x = 180, x = 45.
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