Quadrilateral QRST is inscribed in circle P. Which equation must be true? A. m angle Q=90. B. m angle Q = m an

Question

Quadrilateral QRST is inscribed in circle P. Which equation must be true? A. m angle Q=90. B. m angle Q = m angle S. C. m angle Q + m angle R = 180. D. m angle Q + m angle S = 180.

GPT-5 mini · Answer

D. In a cyclic quadrilateral (one inscribed in a circle) each pair of opposite angles are supplementary, so m∠Q + m∠S = 180°.

Quadrilateral QRST is inscribed in circle P. Which equation must be true? A. m angle Q=90. B. m angle Q = m angle S. C. m angle Q + m angle R = 180. D. m angle Q + m angle S = 180.

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