Answer:
m∠CEA = 90°
∠CEF is a straight angle
∠AEF is a right angle
Step-by-step explanation:
we know that
BE bisects ∠CEA -----> given problem
so
m∠CEB=m∠BEA
m∠CEA=m∠CEB+m∠BEA
The measure of angle CEA is a right angle -----> m∠CEA=90°
The measure of angle CEF is a straight angle -----> m∠CEF=180°
m∠CEF=m∠CEA+m∠AEF
The measure of angle AEF is a right angle -----> m∠AEF=90°
therefore
The statements that must be true are
m∠CEA = 90°
∠CEF is a straight angle.
∠AEF is a right angle
