Question

Can someone give me an explanation for the right answer

Answer 1

if we notice in each triangle ∡A = ∡R and ∡ACW = ∡RWC, thus the angle tickmarks.

now, both triangles are sharing the side CW, so CW is the same length on each.

so we have, an Angle, then another Angle and then the Side, in common in each triangle, AAS.