Across
- 5. The shape of a birthday hat.
- 8. Triangle with 2 congruent sides and angles
- 10. SSS and two extra sides
- 12. Has 2 pairs of parallel lines duh... it's in the name
- 14. The two twins in an Isosceles Triangle
- 15. Sides of a square that never touch
- 16. A triangle with one 90 degree angle
Down
- 1. Longest side of a right triangle
- 2. Squares, rectangles, parallelograms, kites
- 3. Quadrilateral that's the shape of spongebob squarepants
- 4. 'Deformed Trapezoid'
- 6. From square to 2 equal triangles
- 7. Angle between two sister sides of an isosceles trianle
- 9. Four-sided polygon, looks like a diamond
- 11. Not A deformed trapezoid
- 13. 90 degrees