In the diagram, ∠ABC and ∠BCD are right angles, ∠BAD = t and ∠EDF = 70°. Find the value of t.
The correct answer is D. 110°
Vertically opp angles are equal âˆ CDE = 70°
Sum of interior angles in a quadilateral = 360°
(90 + 90 + 70 + t)° = 360°
t° = 360° - 250°
t° = 110°
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