Ben uses a compass and a straightedge to bisect angle pqr, as shown below: the figure shows two rays qp and qr having a common end point q. an arc drawn from q cuts the ray qp at a and the ray qr at b. two small arcs intersect between the lines qp and qr. the point of intersection of the arcs is labeled s. the points q, s, and t are joined with a line. a. ∠aqs ≅ ∠bqs when lines qp and qr are equal. b. ∠aqs ≅ ∠bqs when segments aq and bq are equal. c. ∠aqs ≅ ∠bqs when angle asq is equal to angle bqs. d. ∠aqs ≅ ∠bqs when angle aqs is equal to angle bsq.