Across
- 3. A triangle that has a right angle
- 5. A closed two-dimensional shape with 4 straight sides
- 6. Imaginary line that passes through the center of the shape and divides it into identical halves
- 8. A triangle with 2 congruent sides
- 11. A triangle that has an obtuse angle
- 12. Lines in a plane that never intersect and the same distance apart at every point
Down
- 1. A triangle with 3 congruent sides
- 2. A triangle that has 3 acute angles
- 4. Lines that intersect to form 4 right angles
- 7. A two-dimensional shape with straight lines
- 9. A triangle with no congruent sides
- 10. An endless straight path with no
