geometry crossword

3. the highest point; the top or apex
6. length, a fraction of the circumference of a circle defined by the arc
8. distance around a circle (the perimeter)
9. angles, angles that measure up to 180 degrees
11. a line that lies in the plane of a circle and that intersects the circle at exactly one point
13. the longest side of a right triangle (opposite the right angle)
14. a four-sided figure
15. circles, circles with the same radius

1. angles, any pair of angles each of which is on the same side of one of two lines cut by a transversal and on the same side of the transversal
2. half of a circle or of its circumference
4. a segment that goes through the center with both endpoints on the circle
5. a segment whose endpoints lie on a circle
7. lines, two lines that meet or intersect each other at right angles (90°)
10. a segment from a point on a circle or a sphere to the center
12. a point that divides the line segment into two equal parts