Across
- 4. chord containing the center of a circle
- 5. triangles with two congruent sides
- 7. angle in a circle whose vertex is the center of the circle
- 11. means same size and shape
- 13. angle in a circle whose vertex is ON the circle
- 15. two noncoplanar lines that never intersect
- 16. line that touches a circle in only one point
- 17. angles who share a vertex and who are "across an x" from each other
- 19. arc with a measure of 180 degrees
- 20. measures below 90 degrees
Down
- 1. angles that share a vertex and a side with no common interior points
- 2. segment that extends from the center of a circle to the edge of the circle
- 3. quadrilateral with two pairs of parallel sides
- 6. angles whose measures add up to 180 degrees
- 8. a quadrilateral with four congruent sides
- 9. points that are on the same line
- 10. lines that cross at right angles
- 12. a five-sided polygon
- 14. line or segment that cuts through a circle in two points
- 18. the point at which two rays meet to make an angle