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Help!In the figure below, triangle ABC is an equilateral triangle, and quadrilateral DEFB is a square.
What is mABD?
A. 45°
B. 30°
C. 50°
D. 20°
the figure is below

HelpIn the figure below triangle ABC is an equilateral triangle and quadrilateral DEFB is a square What is mABD A 45 B 30 C 50 D 20 the figure is below class=

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konrad509
[tex]m\angle ABD=m\angle CBD-m\angle ABC\\ m\angle CBD=90\\ m\angle ABC=60\\ m\angle ABD=90-60=30\Rightarrow B[/tex]

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