Geometry Crossword

1. / a curved line or segment of a circle
6. / A line segment that connects the center of the circle to a point on the circle.
7. / A flat surface that keeps spreading in all directions forever.
9. Lines / Two lines that make right angles when they cross.
10. / the distance across the circle through the center
11. / Any object made of at least three straight lines. There can be no gaps, no curves, and no lines that cross each other
12. / The units used to measure an angle.
14. / A line segment that goes from one side of the circle to the other side.
15. / a line that intersects two or more other lines at different points
17. / The angles and the overall appearance of the shapes are the same, but one object is larger than the other.
18. / the bottom side of a geometric figure from which the altitude or height can be constructed

2. / The distance around the outside of a circle.
3. Lines / Two lines, that lie next to each other without ever getting close together or further apart.
4. Angles / angles that are opposite from each other; formed from two intersecting lines
5. / identical in form; coinciding exactly when superimposed.
8. Area / the sum of the areas of the lateral surfaces (only the sides, no bases) of a 3-D figure
10. / A line segment that joins two vertices of a shape by going through the middle of the shape.
11. / The value that shows the relationship of a circle's circumference to its diameter; it has an approximate value of 3.14 or the fraction 22/7
13. / two rays with a common endpoint
16. / A straight path that goes on forever in both directions.