Question
In the figure, YZAB is a parallelogram with the length of YB 2 times the length of YZ. YBC is an equilateral triangle. D is a point on YC such that YD = DC. ∠ZAB is 110°. Find ∠DZA .
4 m

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In the figure, YZAB is a parallelogram with the length of YB 2 times the length of YZ. YBC is an equilateral triangle. D is a point on YC such that YD = DC. ∠ZAB is 110°. Find ∠DZA .