"which pairs of angles in the figure below are vertical angles? check all that apply.

a. angle tsn and angle isw.
b. angle isn and angle tsw.
c. angle ksw and angle nst.
d. angle wsi and angle isk. "

Vertical angles are angles that share the same vertex or corner point. These angles are the angles opposite each other when two lines cross.

In the image there is only one pair of vertical angles.

Angle TSW and Angle ISN. The share the corner point identified as S.

Answer is: B. Angle ISN and Angle TSW.