Answer:
70°
Step-by-step explanation:
The sum of the interioe angles of a quadrilateral is 360°
∠PQR + ∠RSP + ∠SRQ + ∠SPQ = 360°
According with to tje image ∠SRQ is a right angle, that is. 90°
then:
71° + 129° + 90° + ∠SPQ = 360°
290° + ∠SPQ = 360°
∠SPQ = 360° - 290°
∠SPQ = 70°
