Have your students classify triangles by side length, and angle measure, through color coding the type and finding the triangles in a picture.
This can be used as practice, or as an assessment project that scaffold's your student's up to creating their own picture.
There is a rubric included that grades:
-student's understanding of classifying triangles according to side length
-student's understanding of classifying triangles according to angle measure
-student's understanding of the above two concepts combined