-20 is -10 × 2
-1 is -0.5 + -0.5
Answer:
7° and 83°
Step-by-step explanation:
if ∡PQR = 82°, and the ray QS bisects it, it cuts ∡PQR into two equal halves, ∡PQS and ∡RQS, each of which is then 82/2, or 41°.