Across
- 3. four side lengths are all the same but no right angle
- 4. no side lengths is same, a kind of triangle
- 5. two side lengths are the same, a kind of triangles
- 7. a shape with four straight lines
- 8. a shape with three sides
Down
- 1. all side lengths are the same, a kind of triangles
- 2. four sides, two of them are parallel and equal
- 6. four sides, two of them are parallel but not equal