Short. one page, fill in the blank note sheet where students practice identifying the various types of angles in the diagram and deciding if the pairs are congruent or supplementary to each other.
When I do this activity in class, I have students highlight all the acute angles in the diagram in one color and all the obtuse angles in another. This helps them see which are congruent. Same color = congruent, Different colors = supplementary
Answer key included. 4 page PDF is: cover sheet, notesheet, notesheet answer key, credits page