Exploring Congruent Complements

Move point C around (but keep it somewhere between points D and B), then answer the questions below.

What kind of angles are ∠DAC and ∠CAB?

Check all that apply

What kind of angles are ∠EAB and ∠CAB?

Check all that apply

Regardless of where you move point C, what do you notice about angles ∠EAB and ∠DAC?