Step 2: Teach Lesson
Triangles and Quadrilaterals have identifying attributes.
Review: Have the student sketch an example for each:
1. two parallel lines
2. two perpendicular lines
3. an acute angle
4. an obtuse angle
5. a ray
6. a line segment
7. the diameter of a circle
The student can now begin their vocabulary sorting activity. Discuss with the student the categories they chose for their vocabulary
sorts. Review basic vocabulary by having the student discuss and complete the Two-dimensional Geometry Words Foldable for their
journals. As they fill in each word, have the student show what they have sketched and written. Discuss with the student to make
sure they included vocabulary for all essential attributes and parts.