Across
- 6. When all three sides of one triangle are congruent with all three sides on another triangle
- 7. A segment that extends forever in both directions
- 8. Same size and shape
- 9. Tool used to draw perfect circles, equilateral triangles, and squares
- 11. "At a right angle to"
Down
- 1. An object to help draw straight lines
- 2. Plural for vertex; corners
- 3. a segment that divides an angle or other segment in half
- 4. When two triangles have corresponding sides and their included angle congruent to each other
- 5. Parts of two different congruent triangles that have the same measure
- 10. A finite piece of a line