Question

Triangle ABC is a right triangle. Point D is the midpoint of side AB and point E is the midpoint of side AC. The measure of angle ADE is 68°.



The flow chart with missing statements and reasons proves that the measure of angle ECB is 22°.



Which statement and reason can be used to fill in the numbered blank spaces?



Corresponding angles are congruent
Triangle Sum Theorem
Measure of angle AED is 22°


Corresponding angles are congruent
Base angle theorem
Measure of angle AED is 68°


Alternate interior angles are congruent
Triangle Sum Theorem
Measure of angle AED