The problem involves triangles ADE and BDC. Given angle E = 90° and angle DBA = 24°. By triangle properties, angle EAD is solved as 45°.
Since triangle ADE and triangle BDC share side AD, we can use the property that the sum of angles in a triangle is 180 degrees.
Given:
- Angle E is 90 degrees.
- Angle DBA is 24 degrees.
In triangle BDC, angle BDC = 180 - 90 - 24 = 66 degrees.
Since AD is congruent to BD, triangle ADE is an isosceles triangle. Therefore, angle EAD = angle EDA.
In triangle ADE, angle EAD + angle EDA + angle A = 180 degrees.
Since angle EAD = angle EDA, let's denote both as x.
So, x + x + 90 = 180.
2x + 90 = 180.
2x = 180 - 90.
2x = 90.
x = 45.
Therefore, angle EAD = 45 degrees.
So, the correct answer is option 1. 45 degrees.