Given:
The intersecting chords forms vertical angle.
m∠DEB = 105°
To find:
m∠AEC
Solution:
The intersecting chords forms vertical angle.
By vertical angle theorem:
Vertically opposite angles are congruent.
⇒ m∠AEC = m∠DEB
⇒ m∠AEC = 105°
The measure of angle AEC is 105°.
