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It's night and I lost most of my braincells

Date Posted: 1 year ago
Views: 105
1 year ago
angle EDF = 60deg

angle DGH = 78deg

angle GDH = 180 - 78 - 78 = 24deg

angle EDG = 60 - 24 = 36deg

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Chua Xin Yi
Chua Xin Yi's answer
4 answers (Tutor Details)
First find angle GDF, by using properties of isosceles triangle.

Then using properties of equilateral triangle where each angle is 60*, minus off to find angle EDG.