WAEC - Mathematics (2003 - No. 15)
PQRS is a cyclic quadrilateral. If ∠QPS = 75°, what is the size of ∠QRS?
180o
150o
105o
75o
Giải thích
< QPS = 75°
< QRS = 180° - 75° = 105° (opposite angles of a cyclic quadrilateral)
< QPS = 75°
< QRS = 180° - 75° = 105° (opposite angles of a cyclic quadrilateral)