Equilateral triangle X Y W has degree angles of 60 degrees. Point D extends from side X W. Angle D X Y is 120 degrees. Triangle Z Y W sits on side Y W. Angle Z is 90 degrees, angle Y is d degrees, and angle W is c degrees. Point D extends from side X W. Exterior angle Z W C is 90 degrees.
Using the figure on the left, what is the measure of ∠ZWY and ∠ZYW?
60° + c° + 90° = 180°
c =
c° + d° + 90° = 180°
d =
