Answer:
angle FDA = 75 degrees
angle JAI = 75 degrees
Explanation:
In ΔDCE,
angle D + angle C + angle E = 180......(sum of the interior angles of a triangle is always 180 degrees)
angle D + 80 + 25 = 180
angle D + 105 = 180
angle D = 180 - 105
angle D (I. e angle CDE ) = 75 degrees
Now, angle CDE and angle FDA are vertically opposite angles, so,
angle CDE = angle FDA..... (vertically opposite angles are congruent to each other)
therefore, angle FDA = 75 degrees
Now, angle CDE and angle BAD are corresponding angles, so,
angle CDE = angle BAD...... ( corresponding angles are congruent to each other)
angle BAD = 75 degrees
Now, angle BAD and angle JAI are vertically opposite angles, so,
angle BAD = angle JAI..... (vertically opposite angles are congruent to each other)
therefore, angle JAI = 75 degrees