Across
- 2. a polygon with at least one pair of parallel sides
- 9. a polygon with two pairs of parallel sides
- 10. two angles that add to 90 degrees
- 11. a triangle with three sides that each have different lengths
- 12. an angle greater than 90 degrees
- 15. prism a solid where all the faces are rectangles
- 16. figure is a geometric figure composed of two or more smaller figures
- 18. a quadrilateral with at least two pairs of adjacent sides that are the same length
- 19. an angle that is smaller than a right angle
- 20. when a solid is formed when the surface of the solid is cut along enough edges so that the faces of the solid can be placed in one plane to form a connected, two-dimensional figure.
Down
- 1. lines that intersect to form a right angle
- 3. a triangle with three sides of equal length
- 4. two angles that add to 180 degrees
- 5. a parallelogram with four equal sides
- 6. a flat, two-dimensional surface that extends forever
- 7. a triangle with two equal sides
- 8. area The total area of the faces of a solid
- 9. a precise location in a flat space that has no size
- 11. a rectangle with four equal sides
- 13. the amount of three-dimensional space a solid takes up
- 14. an angle that measures exactly 90 degrees
- 17. lines that will never intersect