Question 8
Quadrilateral PQRS satisfies PS=SR, angles PSR=PQR=90°, ST perpendicular to PQ, and ST=5. Find its area.
Editorial note: the source prints an infinity-like symbol between ST and PQ. The right-angle mark in the figure establishes ST perpendicular to PQ; that is the condition used here.
Editorial note: the source prints an infinity-like symbol between ST and PQ. The right-angle mark in the figure establishes ST perpendicular to PQ; that is the condition used here.