Across
- 6. Consists of two adjacent angles that form a straight line
- 7. Representing a precise location in space that has no size; gymnasts must do this to their toes
- 9. A function that changes a figure into a new one by moving, turning, or flipping it on a plane; caterpillars do this to become butterflies
- 10. Type of angle who's measure is exactly 180 degrees
- 12. Transformation that turns a figure around a fixed point; a volleyball team does this
- 15. Type of angle who's measure is greater than 90 degrees
- 16. Two angles that share a common vertex and a common side, but do not overlap
- 19. Two or more points or lines that lie on the same flat surface or plane
- 20. A transformation that "flips" a figure across a fixed line, called the line of reflection, to create a mirror image; you see this in a mirror
Down
- 1. The measurements of two angles add up to exactly 180 degrees
- 2. divide
- 3. One of a pair of non-adjacent angles that are opposite each other when two lines intersect
- 4. Two or more points that lie on the same straight line
- 5. The single point that divides the segment into two equal, or congruent, parts, making it the exact center of the segment
- 8. Type of angle who's measure is less than 90 degrees
- 11. The measurements of two angles add up to exactly 90 degrees
- 13. A flat, two-dimensional surface that extends infinitely in all directions; is used to fly across the country
- 14. Any geometric figure that divides a line segment into two equal, or congruent, parts by passing through its midpoint
- 17. The figure formed by two rays or lines that share a common endpoint, called the vertex
- 18. Type of angle who's measure is exactly 90 degrees