Geometric Puzzle

5. exactly equal' in terms of shape and
9. angles that have a common vertex and a common side
11. measurement of the distance of a side of an object
12. long collection of points
13. has three sides and three angles
16. pairs of opposite angles made by two intersecting lines.
17. made up of exactly similar parts facing each other or around an axis
18. the common intersection of the three altitudes of a triangle or their extensions
19. the highest and lowest values in a set of numbers
20. average of a set of given numbers

1. the action of rotating around an axis or center.
2. the longest side of a right triangle
3. the middle number
4. divides the angle into two equal parts.
6. transformation representing a flip of a figure
7. the halfway point between two data points.
8. having four straight sides.
10. all the points of the line between them.
14. sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse
15. intersects two or more other (often parallel ) lines.