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 28°.

The flow chart with missing statements and reasons proves that the measure of angle ECB is 62°.

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

Answer 1

1. Base angle theorem
2. Corresponding angle are congruent
3. Measure of angle AED is 28°.

1. Alternate interior angles are congruent
2. Base angle theorem
3. Measure of angle AED is 62°.

1. Corresponding angles are congruent
2. Triangle Sum Theorem
3. Measure of angle AED is 28°.

1. Corresponding angles are congruent
2. Triangle Sum Theorem
3. Measure of angle AED is 62°.